CAR SUBWOOFERS

What You Need to Know Before You Buy PART II

2010-06-27T09:55:00.000-07:00

Size and Style

Some people want to hide their amp; some people want to show it off. Lifestyle and space constraints often dictate amplifier size. If you leave your car parked on the street a lot, you might want to have a small amp hidden under your seat or in your trunk. If you want to show off your amp to your friends or display it in plain view, a designer look might suit your needs. If you don’t have much space, sometimes two or three small amps can be better than one big one. These days especially, amplifiers come in all sizes; some are the sizes of old pocket radios. They also come in lots of colors and styles. Whether you’re plain or artistic, you should have no problem finding an amp to fit your personality.

Fine-tuning the Sound

Many amps come with built-in bass equalizers, filters and crossovers, all designed to help your installer fine-tune your system. For example, you might be stuck with a pair of 4” speakers only capable of reproducing midrange and high frequencies. A properly adjusted filter or crossover will cut out the low frequencies and only allow midrange and high frequencies to those speakers. Sure, filters and crossovers improve the quality of sound, but they’ll also save your system from damage by allowing each speaker to focus on its core strengths or design intentions. For subwoofer applications, bass equalizers can be helpful in compensating for a car’s acoustics. Bass equalizers are certainly useful, as long as they’re not abused.

Digital or Analog?

Years ago, a 1,000-watt amplifier was about the size of small surfboard. However, with Class D technology it is not unheard of to get this kind of power out of an amplifier measuring 12” in length. However, Class D amps have been limited to mainly subwoofer-specific amplifiers due to their switching (digital) power supplies. These amplifiers are typically 25 to 30 percent more efficient than their Class AB counterparts, which is why their packaging is so small and one reason why they are a great match for subwoofers.

The old reliable Class AB amplifier is well known for its sound quality and makes up a good 80 percent of the car audio amplifier market. They are also available in virtually any size imaginable, from 25 watts to beyond 2,000. Class AB always makes for a good option to run your mids and highs.

Some multi-channel amps are now combining both digital and analog technologies. There are several available that combine analog (Class AB) channels for the mids and highs with a single digital (Class D) channel dedicated to subwoofer applications.

Pay for Quality

These days a good 2-channel amp starts around a couple hundred dollars, while a high-quality 4-channel amp starts around $300. If you need a 5-channel model, you’ll have to spend at least $400 to get something good. Don’t be enticed by no-name equipment with hard-to-believe prices. Cheap equipment may not always hold up well, especially in abusive situations.

Use a Professional Installer

Have your components installed by a reputable, certified installer. An inexperienced individual could easily connect something incorrectly, causing expensive vehicle damage. While quality audio components are a necessity in reproducing an artist’s music accurately, even the best equipment installed incorrectly will yield poor results. Happy amplifier shopping!

And finally, whether you listen to rap, classic rock, jazz or classical, there’s nothing like having plenty of power on tap when you really want to crank it up. However, one killer power amp coupled with average speakers and a stock CD player isn’t going to translate into an audiophile-quality experience. If you want more from your car stereo, a speaker upgrade will definitely result in the most noticeable improvement in sound quality. Since budget is often an issue, upgrade your system one step at a time—fullrange speakers first, amplifier second, subwoofer, etc. Each step of the way, simply purchase the best gear you can afford.

THE MANUFACTURER’S PERSPECTIVE

How can the average consumer go about choosing a high-quality amplifier?

First: Beware of the “bling.” It is there to hook you and costs money. Power meters, see-through panels, chrome and LEDs do nothing for the sound. Find a balance and don't get sucked in by stuff that has no use and is only meant to distract you. Money spent on “bling” for the outside is money not spent on quality for the inside.

Second: Ask to see the manuals. A company taking pride in its product will want you to understand how the product works and will provide a useful, informative manual. If you can't understand how the controls work from the manual, you should probably look elsewhere.

Third: Check out the car audio dealers. Specifically check out the sales guys and installers. See what they have in their cars. Yes, the manager will have his people using the products he wants to sell. But, by the same token, those guys want decent stuff in their cars, so if they're using it, that's (generally) a good sign.

These external things will help narrow your choices to the better performing products. Of course it's the internal elements that contribute most to reliability and performance. Multi-layer circuit boards, symmetrical design, heavy-gauge traces and appropriate power supplies are just a few. Unfortunately, these are hard to recognize and most sales people won't be much help.

So read those reviews. When magazines review a product they take a good, close look at how it's built. Read the whole text of the reviews. If you can't find the amp you're looking for, find another one from the same series. The build methods will be the same and you'll get a better feel for the real quality.

What You Need to Know Before You Buy PART I

2010-06-27T09:41:00.000-07:00

How Much Power?

You want more power. That's the whole point of adding amps. But first you should define your power needs, so think about your system goals. If you're going to your local shop, expect your installer to pose a few questions: What kind of music do you listen to? Is it bass heavy? Are you planning to install a subwoofer? Do you listen to your music loud? Do you drive a convertible or a hot rod? How much money are you willing to spend?

If you like your music loud and bass heavy, and you’re planning to install a subwoofer, you will definitely need big power. The same holds true for people with cars that inherently have lots of road noise, such as convertibles. For most basic applications though, a quality 50-watt x 2 or 50-watt x 4 amplifier will work wonders to amplify your factory, component or coax speakers. For example, a basic system might consist of two 6 1/2” coaxes in the front doors and two 6” x 9”s in the rear. Using a 50 x 4 amplifier you end up with one dedicated amp channel per speaker. If it is not in your budget to purchase a 4-channel, a 2-channel amp could be substituted to either run the front speakers or both front and rear (with resistors to attenuate the rear). To be assured of good, “clean” power, always buy the proper amount of power for the given speakers you plan to amplify. If you underpower your speakers, you may risk pushing your amp to the limit, which could diminish sound quality by generating distortion and cause speaker and/or amplifier damage. Extra power means your amp will run cooler and more efficiently, translating into better quality sound.

How many channels?

If possible, you’ll want to dedicate one amp channel per speaker. But no worries, there are also perfectly acceptable ways to have your installer wire a 4-speaker system with a 2-channel amp. A 50 x 2 or 50 x 4 amplifier will be fine for basic 2- or 4-speaker systems. If you’re planning to power a subwoofer, a 5-channel amp is a godsend, with the fifth channel dedicated to your sub. Since bass demands more power, the fifth channel usually delivers more wattage. A 5-channel amp might spec out like this: 50 watts x 4 plus 100 watts x 1.

Most amps today are capable of being bridged. With bridging, multiple amp channels are combined to get more power from a single amp channel, allowing for excellent installation flexibility. A 50 x 4 amp could be morphed from a 4-channel into a 3- or 2-channel amp. Here’s how it might spec out: 50 x 2 plus 200 x 1 or 200 x 2. Bridging is great for sub applications.

Note: some amps include a remote level control allowing you to manage the bass level from the driver’s seat. Since bass varies greatly from one musical genre to the next, a remote sub control is a super convenient feature.

Compare Power Ratings and Specs

When it comes to power ratings, manufacturers have many different ways of saying the same thing, making it confusing for consumers. You’ll need to know what to look for when you’re shopping around. One thing you should know is that your car battery and alternator are responsible for generating the voltage and current that power your amp. But voltage is not regulated equally from car to car and may vary from engine idle to that of a higher RPM. More voltage typically equals more amp power (with the exception of amplifiers using tightly regulated power supplies). This is very important since most manufacturers rate their product at 14.4, 13.8 or 12.5 volts. Respectively, an amplifier (those using unregulated or loosely regulated power supplies) rated 50 watts x 2 at 14.4 volts may see a decrease in power output by as much as 15 percent when powered with 12.5 volts. In retrospect, a 50-watt x 2 amplifier rated at 12.5 volts may see up to a 15 percent increase in power at 14.4 volts. That, my friends, could be the difference of up to 30 watts between two 50-watt x 2 amps. It is important to know that you are comparing apples to apples since there is no governing body verifying the product specifications in car audio. While this may be problematic with certain brands, there is a way to confirm some products’ specifications. The CEA (Consumer Electronics Association) developed the CEA-2006 specification guidelines that confirm specifications. Mobile electronics carrying the label must remain true to the published specifications taken at 14.4 volts (just look for the CEA-2006 label). More information on participating manufacturers can be had at www.ce.org. However, when in doubt, ask your installer.

Some amps state “RMS” power while others utilize “continuous average” power. These monikers can be construed as the same, leaving amplifiers using this verbiage open for comparison. An amp that’s 50 watts RMS x 2 into 4 ohms (we’ll discuss ohms in a second) can effectively deliver 50 watts x 2 at the onset of or below a clipped output level (clipping is when a sine wave turns into a square wave otherwise noted as distortion). In contrast, “maximum” or “peak” power ratings are marketing terms that typically use figures relating to at least double the RMS power and are generally not practical for comparing amps (and in some cases should be followed by the clause “when lightning strikes”). An amp rated at 50 watts x 2 maximum into 4 ohms more times than not is equivalent to an amp that’s 25 watts RMS x 2 into 4 ohms.

Other amps offer “total” power ratings, such as 100 watts total RMS power. This is another tactical marketing maneuver manufacturers use that essentially is the sum of all the channels of the amplifier. In the case of my example, this could relate to an amp that is 50 watts x 2 or 25 watts x 4 into 4 ohms.

Now, back to the issue of “ohms.” Amp ratings are typically given at 4 ohms. Ohms refer to impedance or electrical resistance. Every speaker has an internal resistance due to the wire on the voice coil and additional components such as those of a crossover. Heck, even speaker wire has resistance—but let’s not get sidetracked. The majority of car speakers are 4 ohms, so that’s why amplifier manufacturers generally rate them as such. Often there will be other impedance ratings such as 2 ohm and sometimes 1 or 0.5 ohm depending on the amplifier. Again, power ratings and specs come in many different and often misleading forms, so don’t be fooled. Make sure you’re comparing apples to apples.

JBL W12 GTI

2008-04-23T10:50:00.001-07:00

12" Differential Drive® Design Subwoofer.

Features of the JBL W12 GTI include:

Cast aluminum heat-sink cooled magnet system - for an extreme power handling
Differential Drive System - consisting of dual-edgewound voice-coil and dual-gap technology for a doubling of Power Handling, Sensitivity and an "electrical brake" to control cone motion at extreme excursions
more than +/- 20mm linear cone excursion - provides extremely high sound pressure levels
Symmetrical-Field-Geometry (SFG) - reduces distortions to minimum at any level
Aquaplas coated cone - for exceptionally stable performance even at extreme levels
Butyl rubber surround - for better sound quality and long durability
Two separate gold plated screw/plug terminals - provide long lasting electrical connections

JBL W10 GTI

2008-04-23T10:49:00.001-07:00

10" Differential Drive® Design Subwoofer.

Features of the JBL W10 GTI include:

Cast aluminum heat-sink cooled magnet system - for an extreme power handling
Differential Drive System - consisting of dual-edgewound voice-coil and dual-gap technology for a doubling of Power Handling, Sensitivity and an "electrical brake" to control cone motion at extreme excursions
more than +/- 20mm linear cone excursion - provides extremely high sound pressure levels
Symmetrical-Field-Geometry (SFG) - reduces distortions to minimum at any level
Aquaplas coated cone - for exceptionally stable performance even at extreme levels
Butyl rubber surround - for better sound quality and long durability
Two separate gold plated screw/plug terminals - provide long lasting electrical connections

JBL P1222

2008-04-23T10:48:00.001-07:00

12" Plus One® (patent pending) Dual-Voice Coil Subwoofer.

Features of the JBL P1222 include:

Power Handling, RMS - 400 Watts
Power Handling, Peak - 1200 Watts
Sensitivity - 97dB
Mounting Depth - 5-7/8"
Cut-Out Diameter - 11-1/16"
Impedance - Dual 2 Ohms voice coils can be wired to deliver either a 1 ohm or 4 ohm load

JBL P1022

2008-04-23T10:46:00.001-07:00

10" Plus One (patent pending) Dual-Voice-Coil Subwoofer. The JBL P1022 features a proprietary die-cast frame that ensures that the motor structure stays centered in the voice-coil gap, ensuring long-term reliability and durability.

Features of the JBL P1022 include:

Kevlar-impregnated paper woofer cones
Plus One (patent pending) woofer cones
Power Handling, RMS - 400 Watts
Power Handling, Peak - 1200 Watts
Sensitivity - 96dB
Mounting Depth - 5-7/8"
Cut-Out Diameter - 9-1/16"
Impedance - Dual 2 Ohms voice coils can be wired to deliver either a 1 ohm or 4 ohm load

JBL P 1520e

2008-04-23T10:45:00.000-07:00

38cm (15") Subwoofer.

Features of the JBL P 1520e include:

Power Handling, Peak - 400/1600W
Sensitivity - 92dB
Nominal Impedance - 4 Ohms
Frequency Response - 18Hz-400Hz
Voice-Coil Diameter - 80mm
Mounting Depth - 172mm
Cut-Out Diameter - 353mm

JBL P 1220e

2008-04-23T10:44:00.001-07:00

30cm (12") Subwoofer.

Features of the JBL P 1220e include:

Power Handling, Peak - 400/1600W
Sensitivity - 91dB
Nominal Impedance - 4 Ohms
Frequency Response - 20Hz-400Hz
Voice-Coil Diameter - 80mm
Mounting Depth - 172mm
Cut-Out Diameter - 275mm

JBL P 1020e

2008-04-23T10:43:00.000-07:00

25cm (10") Subwoofer.

Features of the JBL P 1020e include:

Power Handling, Peak - 400/1600W
Sensitivity - 89dB
Nominal Impedance - 4 Ohms
Frequency Response - 25Hz-500Hz
Voice-Coil Diameter - 80mm
Mounting Depth - 116mm
Cut-Out Diameter - 229mm

JBL GTO526

2008-04-23T10:42:00.001-07:00

Features of the JBL GTO526 include:

Car Speaker Type - Component
Elements - 2-Way
Car Speaker Function - Subwoofer / Tweeter / Mid-Range Speaker
Size - 5.25"
Nominal Power Handling - 45 Watt RMS
Peak Power Handling - 135 Watt
Frequency Response - 70 Hz - 21 kHz
Sensitivity - 89 dB
Impedance - 4 ohm (Dual Coil)
Tweeter Design - Dome
Woofer Material - Poly / Plastic
Surround Material - Rubber
Top Mounting Depth - 2.38 In.
Mounting Diameter / Length - 4.69 In.

JBL GTO1202D

2008-04-23T10:41:00.000-07:00

Features of the JBL GTO1202D include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 12"
Nominal Power Handling - 300 Watt RMS
Peak Power Handling - 1200 Watt
Frequency Response - 23 Hz - 400 Hz
Sensitivity - 93 dB
Impedance - 4 ohm (Dual Coil)
Tweeter Design - Cone
Surround Material - Rubber
Top Mounting Depth - 5.06 In.
Bottom Mounting Depth - 5.06 In.
Mounting Diameter / Length - 11.19 In.

JBL GTO1200B

2008-04-23T10:40:00.000-07:00

Features of the JBL GTO1200B include:

12" Bass Reflex Subwoofer Box
Custom-tuned bass-reflex system acoustically optiized for in-vehicle applications.
Precision tuned for extended, powerful, deep bass.
Constructed with high-end MDF for rock-steady reliability
Subwoofer Type GTO1204 - 300 mm
Power Handling, RMS 250 Watts
Power Handling, Peak 1000 Watts
Sensitivity (2.83V @ 1m) 94dB
Frequency Response (-3dB) 26Hz - 300Hz
Dimensions (H x W x D) 18" x 17-5/16" x 14-3/16"

JBL GTO 804D

2008-04-23T10:39:00.000-07:00

8" Single 4-Ohm Subwoofer.

Features of the JBL GTO 804D include:

RMS Power Handling - 200W
Peak Power - 800W
Frequency Response - 30Hz - 400Hz
Sensitivity - 91dB
Impedance - 4 Ohms
Cut-Out Diameter - 180mm (7-1/16")
Mounting Depth - 112mm (4-3/8")
Overall Diameter - 210mm (8-1/4")

JBL GTO 1502D

2008-04-23T10:38:00.002-07:00

15" Dual 2-Ohm Subwoofer.

Features of the JBL GTO 1502D include:

RMS Power Handling - 300W
Peak Power - 1200W
Frequency Response - 23Hz - 400Hz
Sensitivity - 93dB
Impedance - 4 Ohms/1 Ohm
Cut-Out Diameter - 342mm (13-7/16")
Mounting Depth - 143mm (5-5/8")
Overall Diameter - 383mm (15-1/16")

JBL GTO 1204BR

2008-04-23T10:38:00.001-07:00

300 mm Bass Reflex Subwoofer Box. For anyone that absolutely has to let rip in their car, the new range of GTO subwoofer enclosures are the real deal. All of the enclosures house the highly-praised GTO 12¿ subwoofer. The GTO1204BR enclosure is the recommendation for rock fans. The crispest possible port tuning takes drum solos to another level. But the GTO1204BR delivers great pop and electronic music, too. Moreover, the box has great visual styling. A varnished front and stable protective cast aluminium grilles mean that the enclosure will catch the eye in any car boot. Put these boxes in your car, inject 250 watts of power, and just listen to them take off!

Features of the JBL GTO 1204BR include:

Elegant Design - Black lacquered front and silver lacquered tunnel port
Aluminum die-cast grill - Looks great and offers a high level of woofer cone protection.
Optimized Acoustics - The large profile of the port limits port noise efficiently.
Powerful Bass - Perfectly tuned to the in-car environment. This box is optimized for a tight and precise bass response.
New 300mm GTO Subwoofer generation - The woofer offers increased power handling of 300/1200W (RMS/peak) compared to old GT4.

JBL GTO 1202D

2008-04-23T10:37:00.001-07:00

12" Dual 2-Ohm Subwoofer.

Features of the JBL GTO 1202D include:

RMS Power Handling - 300W
Peak Power - 1200W
Frequency Response - 23Hz - 400Hz
Sensitivity - 93dB
Impedance - 4 Ohms/1 Ohm
Cut-Out Diameter - 285mm (11-3/16")
Mounting Depth - 129mm (5-1/16")
Overall Diameter - 316mm (12-7/16")

JBL GTO 1002D

2008-04-23T10:36:00.000-07:00

10" Dual 2-Ohm Subwoofer.

Features of the JBL GTO 1002D include:

RMS Power Handling - 250W
Peak Power - 1000W
Frequency Response - 25Hz - 400Hz
Sensitivity - 91dB
Impedance - 4 Ohms/1 Ohm
Cut-Out Diameter - 234mm (9-3/16")
Mounting Depth - 116mm (4-9/16")
Overall Diameter - 264mm (10-3/8")

JBL GTO 1000B

2008-04-23T10:35:00.000-07:00

Features of the JBL GTO 1000B include:

Power Handling, RMS 250 Watts
Power Handling, Peak 1000 Watts
Sensitivity (2.83V @ 1m) 93dB
Frequency Response (-3dB) 32Hz - 300Hz
Dimensions (H x W x D) 15-1/2" x 16-1/8" x 13-3/16"
Impedance 4 Ohms
10" Bass Reflex Subwoofer Enclosure
Custom-tuned bass-reflex system acoustically optiized for in-vehicle applications
Precision tuned for extended, powerful, deep bass.
Constructed with high-end MDF for rock-steady reliability.

JBL GT415

2008-04-23T10:34:00.000-07:00

38cm (15") Subwoofer.

Features of the JBL GT415 include:

Polypropylene woofer cone delivers exceptional attack resulting in incredibly tight bass response.
Butyl rubber surrounds offer ideal cone-edge suspension and also guarantee long-term reliability by rejecting moisture and ultraviolet contamination.
12mm Linear one-way X-max and dual 40oz(80oz)magnets make this subwoofer a great choice for high output applications.
Progressive spider provides better control at excursion limits than more commonly used linear spiders.

JBL GT412

2008-04-23T10:33:00.000-07:00

Features of the JBL GT412 include:

12" 1000W peak subwoofer
Power Handling, RMS: 250 Watts
Power Handling, Peak: 1000 Watts
Frequency Response (13dB): 28Hz - 450Hz
Sensitivity: 93dB
Mounting Depth: 6-1/4"
Cut-Out Diameter: 11-1/8"

JBL GT410

2008-04-23T10:32:00.000-07:00

25cm (10") Subwoofer.

Features of the JBL GT410 include:

Polypropylene woofer cone delivers exceptional attack resulting in incredibly tight bass response.
Butyl rubber surrounds offer ideal cone-edge suspension and also guarantee long-term reliability by rejecting moisture and ultraviolet contamination.
12mm Linear one-way X-max and dual 40oz(80oz)magnets make this subwoofer a great choice for high output applications.
Progressive spider provides better control at excursion limits than more commonly used linear spiders.

JBL GT315

2008-04-23T10:31:00.000-07:00

Features of the JBL GT315 include:

15" subwoofer
300 Watts Continuous/600 Watts Peak
Frequency Response 29Hz-3kHz

JBL GT312

2008-04-23T10:30:00.000-07:00

Features of the JBL GT312 include:

12" subwoofer
225 Watts Continuous/450 Watts Peak
Frequency Response 29Hz-3kHz

JBL CS12

2008-04-23T10:29:00.000-07:00

300mm Subwoofer

Features of the JBL CS12 include:

Polypropylene woofer cone - for high power handling
Rubber Surround - for high cone edge suspension and long durability
Progressive Spider - offers better control at excursion limits than linear spiders
Moderate Q design for high output in small sealed, vented and band pass enclosures

JBL CS10

2008-04-23T10:28:00.000-07:00

Features of the JBL CS10 include:

Power Handling, RMS - 100W
Peak Power - 400W
Frequency Response - 38Hz - 800Hz
Sensitivity (2.83V/1m) - 91dB
Impedance - 4 ohms
Mounting Depth - 116mm
Cut-Out Diameter - 229mm
Revc - 3,6 ohms
Vas - 63L
Qts - 0,42
Fs - 29,6Hz
Qes - 0,44
Qms - 6,87
Mms - 85g
Levc - 2mH

JBL BASSPRO II

2008-04-22T13:49:00.000-07:00

Features of the JBL BASSPRO II include:

100-watt, four-channel amplifier driving a unique quad-voice coil 165mm subwoofer
Single-vented band pass box design - makes the most efficient use of the amplifiers
output watts and translates them into a deep and impulsive bass
Closed rear chamber - for extremely high power handling
Front- and rear-rounded vent - keeps away air-stream noise
MDF panel - guarantees high stability and long durability even under extreme conditions
12 dB/octave electronic low pass filter with selectable 70Hz-100Hz crossover frequency for precise frequency division to match any system
Line-level and speaker-level Inputs to integrate seamlessly with virtually any factory-installed head unit
Variable input sensitivity for compatibility with all source units and factory head units
Input for a separate Remote Level Control (optional) to control the output level of the BassPro directly from the dashboard of the car.
Effective protection circuitry against short circuit, overheating and over-current
High-quality power, input and output connectors for clean, tight, long-lasting connections
Power-On indicator led for visible indication of amplifier status

Infinity Reference REF9613I

2008-04-22T13:47:00.000-07:00

Features of the Infinity Reference REF9613I include:

Car Speaker Type - Component
Elements - 3-Way
Car Speaker Function - Subwoofer
Size - 6" x 9"
Nominal Power Handling - 100 Watt RMS
Peak Power Handling - 300 Watt
Frequency Response - 46 Hz - 21 kHz
Sensitivity - 92 dB
Impedance - 4 ohm (Dual Coil)
Tweeter Design - Semi Dome
Tweeter Size - 0.75"
Woofer Material - Poly / Plastic
Surround Material - Rubber
Top Mounting Depth - 3 In.
Bottom Mounting Depth - 3.56 In.

Infinity Reference REF1240W

2008-04-22T13:43:00.001-07:00

Features of the Infinity Reference REF1240W include:

Car Speaker Type - Component
Car Speaker Function - Subwoofer
Size - 12"
Nominal Power Handling - 300 Watt RMS
Peak Power Handling - 1200 Watt
Frequency Response - 23 Hz - 400 Hz
Sensitivity - 93 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Poly / Plastic
Surround Material - Rubber
Top Mounting Depth - 5.06 In.
Mounting Diameter / Length - 12.44 In.

Infinity REF 1240W

2008-04-22T13:40:00.001-07:00

300mm Subwoofer.

Features of the Infinity REF 1240W include:

Power Handling, RMS: 300 watts
Power Handling, Peak: 1200 watts
Sensitivity (2.83V/1m): 93dB
Frequency Response: 25Hz - 400Hz
Nominal Impedance: 4 Ohms
Voice-Coil Diameter: 51mm
Mounting Depth: 129mm
Cut-Out Diameter: 284mm

Infinity REF 1040W

2008-04-22T13:38:00.000-07:00

250mm Subwoofer.

Features of the Infinity REF 1040W include:

Power Handling, RMS: 250 watts
Power Handling, Peak: 1000 watts
Sensitivity (2.83V/1m): 91dB
Frequency Response: 25Hz - 400Hz
Nominal Impedance: 4 Ohms
Voice-Coil Diameter: 51mm
Mounting Depth: 116mm
Cut-Out Diameter: 232mm

Infinity KAPPA PERFECT 10VQ

2008-04-22T13:34:00.001-07:00

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250mm High-Output Subwoofer.

Features of the Infinity KAPPA PERFECT 10VQ include:

Power Handling, RMS: 400 watts
Power Handling, Peak: 1600 watts
Sensitivity (2.83V/1m): 87dB
Frequency Response: 25Hz - 400Hz
Nominal Impedance: 4 Ohms
Voice-Coil Diameter: 77mm
Mounting Depth: 166mm
Cut-Out Diameter: 237mm

Infinity KAPPA 62.5i

2008-04-22T13:32:00.000-07:00

Features of the Infinity KAPPA 62.5i include:

Car Speaker Type - Coaxial
Elements - 2-Way
Car Speaker Function - Subwoofer � Tweeter
Size - 6.50"
Nominal Power Handling - 75 Watt RMS
Peak Power Handling - 225 Watt
Frequency Response - 45 Hz - 21 kHz
Sensitivity - 90 dB
Impedance - 4 ohm (Dual Coil)
Tweeter Design - Dome
Tweeter Size - 1"
Woofer Material - Metal
Surround Material - Rubber
Top Mounting Depth - 2.19 In.
Mounting Diameter / Length - 5.00 In.

Infinity KAPPA 120 3SE

2008-04-22T13:31:00.001-07:00

Infinitys Ceramic Metal Matrix DiaphragmT material is a major breakthrough in transducer-diaphragm technology. For subwoofer applications, it offers pistonic operation over the entire usable range of the driver, eliminating colorations due to cone breakup modes and, thus, dramatically reducing distortion. And, the diaphragm will not deteriorate when exposed to moisture, sunlight or extreme temperatures, making ceramic metal matrix an ideal material for automotive applications. Infinitys top-ranked PreludeT MTS was the first product to use this breakthrough driver technology, which is now the hallmark of the brands home-audio lineup. * Flat Progressive Spider - A flat progressive spider is used on all Kappa subwoofers to provide maximum control at excursion limits.

* Flared and Polished Polepiece Vents - In addition to providing maximum voice-coil cooling, the flared and polished polepiece vent eliminates mechanical noises created by excessive turbulence at the mouth of the vent.

Features of the Infinity KAPPA 120 3SE include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 12"
Nominal Power Handling - 300 Watt
Technical Features:
Peak Power Handling - 1200 Watt
Frequency Respond - 18 Hz - 250 Hz
Sensitivity - 94 dB
Impedance - 4 ohm
Components:
Woofer Material - Metal
Surround Material - Butyl Rubber
Mounting:
Top Mounting Depth - 5.79 In.
Mounting Diameter / Length - 10.94 In.

Infinity KAPPA 100.3se

2008-04-22T13:29:00.001-07:00

250mm Subwoofer.

Features of the Infinity KAPPA 100.3se include:

Subwoofer Dimensions: 250mm
Power Handling, RMS: 275/1100 Watts
Frequency Response (± 3dB): 20Hz - 250Hz
Sensitivity (2,83 V @ 1m): 93dB
Impedance: 4 Ohms
Mounting Depth: 160mm
Cut-Out Diameter: 232mm

Pioneer TS-W12PRS

2008-02-13T12:41:00.000-08:00

A subwoofer that can handle real power and equipped with the Voice Coil Cooling System (VCCS), which together with a giant magnetic circuit, draws heat away from the inside of the sub, so that the sound stays natural and your subwoofer keeps its cool. There's also a 3� (76 cm) dual layer long voice coil (2 x 4 ohm) that, combined with the extremely light Aramid Fibre Composite Cone, results in a very strong moving force.

Features of the Pioneer TS-W12PRS include:

Short description - C-Type Subwoofer
Frequency response - 15 - 2.000 Hz
Sensitivity (1W/1m) - 92 dB
Qts - 0,39
Recommended sealed enclosure (Litres) - 28
Lowest resonance frequency (FS) - 24 Hz
Maximum Power - 1.200 Watt
Nominal input power - 300 Watt
Vas - 93
Woofer size (cm) - 30 cm
Woofer material - Aramid Fibre Composite cone woofer
Dual 4-ohm voice coils: 2 or 8 ohm
Front VCCS (Voice Coil Cooling System)
Terminals - Gold-plated

Pioneer TS-W121SPL

2008-02-13T12:40:00.001-08:00

Loads of decibels combined with solid power make the TS-W121SPL a force to be reckoned with. This high-quality subwoofer weighs in at +165 dB with a thumping 2000 W maximum power output.

Borrowing some of the innovative ideas from its older brother, the TS-W5000SPL, this 30 cm subwoofer features a Glass fibre/Carbon fibre reinforced IMPP cone and a die-cast aluminium basket. With all of this and more, the TS-W121SPL has what it takes for your next SPL competition, or perhaps your next trip around the block!

Features of the Pioneer TS-W121SPL include:

Short description - SPL C-Type Subwoofer
Interlaced Glass Fibre/Carbon Fibre Reinforced IMPP cone
Wide-roll, 3-layer fibre woven radial surround
Double-stacked high power magnets
Silver binding post terminal
Aluminium die-cast basket with bottom hold structure
Extended and vented pole yoke
Dual 4 ohm voice coils (2 or 8 ohm)
Optional accessories:
UD-G305 spoke grille
UD-W300S custom enclosure box
Enclosure use
Frequency response - 18 - 2.000 Hz
Sensitivity (1W/1m) - 89 dB
Qts - 0.328
Recommended sealed enclosure (Litres) - 42.5
Lowest resonance frequency (FS) - 32 Hz
Maximum Power - 2.000 Watt
Nominal input power - 750 Watt
Vas - 34.53 l
Woofer size (cm) - 30 cm
Dual 4-ohm voice coils: 2 or 8 ohm

Pioneer TS-W101SPL

2008-02-13T12:38:00.000-08:00

A big fan of SPL? Then the TS-W101SPL may be your winning ticket. The high SPL capability � up to 165 dB � will charge your system with intense power and maximum force. Power output checks in at a heady 1500 W. Based on the same technology found in the TS-W5000SPL competition model, this subwoofer is filled with quality material including a wide-roll, 3-layer fibre woven radial surround. Get ready to rock the block!

Features of the Pioneer TS-W101SPL include:

SPL C-Type Subwoofer
Interlaced Glass Fibre/Carbon Fibre Reinforced IMPP cone
Wide-roll, 3-layer fibre woven radial surround
Double-stacked high power magnets
Silver binding post terminal
Aluminium die-cast basket with bottom hold structure
Extended and vented pole yoke
Dual 4 ohm voice coils (2 or 8 ohm)
Optional accessories:
UD-G255 spoke grille
UD-W250S custom enclosure box
Enclosure use
Frequency response - 18 - 2.500 Hz
Sensitivity (1W/1m) - 87 dB
Qts - 0.376
Recommended sealed enclosure (Litres) - 28.3
Lowest resonance frequency (FS) - 37 Hz
Maximum Power - 1.500 Watt
Nominal input power - 600 Watt
Vas - 17.54 l
Woofer size (cm) - 25 cm
Dual 4-ohm voice coils:- 2 or 8 ohm

Pioneer TS-SW841D

2008-02-13T12:37:00.001-08:00

Features of the Pioneer TS-SW841D include:

Interlaced Ultra Long Glass Fibre reinforced IMPP™ drive cone
3-layer fibre woven radial surround
Double cone reinforcement nodes
Damper-less, Air suspension excursion control system
Aluminium centre cap
Bottom-hold design aluminium die-cast chassis with fin shape design
Spring compression binding post terminal
4 ohm voice coil
Frequency response - 30 - 1.500 Hz
Sensitivity (1W/1m) - 85 dB
Maximum Power - 500 Watt
Nominal input power - 120 Watt
Woofer size (cm) - 20 cm
Woofer material - Interlaced Glass/Carbon Fibre reinforced IMPP™ upper cone

Pioneer TS-SW124D

2008-02-13T12:35:00.001-08:00

Slim and compact are not typical words associated with a subwoofer, but they perfectly describe the TS-SW124D. Only 8.3 cm deep, it revolutionises the very concepts of installation and application. For example, its recommended sealed enclosure is a mere 22.6 litre, the smallest of any Pioneer subwoofer currently available. It combines top technologies - the Interlaced Carbon/KEVLAR® brand Fibre Reinforced IMPP double cone - with the revolutionary space-saving concept, the Damper-less, Air suspension system. This innovative two-cone system creates an airtight space that reduces air pressure tension inside the subwoofer for clear, pure sound. A top-quality performer in a compact package, this subwoofer is sure to appeal to customers demanding design and installation flexibility along with their high power performance.

Features of the Pioneer TS-SW124D include:

Shallow-Type Subwoofer
Interlaced Carbon/KEVLAR® brand Fibre Reinforced IMPP double cone
3-layer fibre woven radial surround
Double cone reinforcement nodes
Damper-less, Air suspension excursion control system
Aluminium die-cast one-piece rigid chassis
Silver binding post terminal
Extended, vented and projected T-pole-type yoke
4 ohm voice coil
Enclosure use
Frequency response - 18 - 1,000 Hz
Sensitivity (1W/1m) - 88 dB
Qts - 0.55
Recommended sealed enclosure (Litres) - 22.64
Lowest resonance frequency (FS) - 31.7 Hz
Maximum Power - 1.200 Watt
Nominal input power - 300 Watt
Vas - 28.05 Litres
Woofer size (cm) - 30 cm

Pioneer TS-SW1241D

2008-02-13T12:32:00.000-08:00

Features of the Pioneer TS-SW1241D include:

Interlaced Ultra Long Glass Fibre reinforced IMPP™ drive cone
3-layer fibre woven radial surround
Double cone reinforcement nodes
Damper-less, Air suspension excursion control system
Aluminium centre cap
Bottom-hold design aluminium die-cast chassis with fin shape design
Spring compression binding post terminal
4 ohm voice coil
Frequency response - 18 - 1.000 Hz
Sensitivity (1W/1m) - 88 dB
Maximum Power - 1.400 Watt
Nominal input power - 350 Watt
Woofer size (cm) - 30 cm
Woofer material - Interlaced Glass/Carbon Fibre reinforced IMPP™ upper cone

How To Choose Car Subwoofer - Part 2

2008-01-24T11:55:00.000-08:00

The best of the new subwoofers are alluminum subs. I use a single aluminum Audiobahn 12" in my Pathfinder off of a Kicker amp, and I love it. The sound quality that it gives me is very clean and smooth. The surrounds around the voice coils are usually rubber. Other brands may use other types of surrounds, but rubber is still the most commonly used and most durable.
-Voice Coils-
*The more layers and space that you have, the better sound quality you get. There are two kinds of bass, clean bass and "ghetto bass". Clean bass subs include brands such as Nakamichi, McIntosh, Blaupunkt, Audiobahn, Infinity, and other higher end brands. They usually have dual-voice coils and give very clean bass. There are also such things as "ghetto subs" which can handle enormous amounts of power, such as 1000 Watt+ RMS, but their bass is very dirty and distorted, it's not good for real music. I've seen very expensive subs that have quadruple voice coils (Sony Mobile ES), but a majority of the high quality subs will have dual-voice coils, but you can definitly do with one.
-Driver Sizes-
*Well, as you can see, in the car an 8" sub will make the car vibrate and do everything that someone would want a subwoofer to do. However, the larger the subwoofer, it can get: Louder, cleaner, hit lower frequencies, and handle more power. If you've got a tight budget, an 8" will do the job, but if you're an audiophile or are really into music, then bass is would be very important to you. I think the ideal size for any subwoofer is 12" because it can hit the lowest notes without using all that much power. A 12" can certainly reach lower notes than an 8". If you can hear the difference in frequencies or need that "bang", then you should get a larger subwoofer. However, if you just want to fill in some lower notes but aren't expecting that much, then go for a 8" subwoofer or something like that. It would save you money.
-Amps and Power-
*The power of your amp should depend on the size of the driver or how much bass you want. I use a fairly powerful amp to power my Audiobahn. I know people that are car stereo crazy, and they power over 1000 Watts to some of their subs, but that is over-kill. It can break the glass on a car, and if the subwoofer is poorer quality, there is a huge amount of distortion. You should never exceed the RMS rating on your drivers, because one day your sub will go "pop!", and there will be nothing left. I think something around 200 Watts per driver should be enough for most people. Most amps that have much more power than that are over-kill I think.
-In Conclusion-
*I hope that this review has helped you in finding the perfect subwoofer for your car. If you have trouble finding the right brand or anything, just look up consumer reviews or get advice from friends. My personal advice is that Audiobahn or Blaupunkt are both superb brands and you'll definitely get a lot for your money. But, most brands will make consumers happy. Well, good luck!

How To Choose Car Subwoofer - Part 1

2008-01-24T11:51:00.000-08:00

How To Choose The Right Car Subwoofer The Bottom Line Read this review to find out how to choose the right subwoofer(s) for your car. Choosing a subwoofer can be a very difficult but interesting task. When you're choosing a car sub, you need to know what you really want. It depends what kind of music you listen to, and other factors. -Your Car Is Not A House-

*I have heard subwoofers in big rooms in houses. The subs for example were 8", and the rooms were large. The bass was terrible because it wasn't able to fill the room or anything. The vibrations and everything that the sub had to do was not there. The car is a completely different environment. Bazooka makes popular subs, and a lot of people buy their 8" amplified tubes, I have heard these tubes in Jeep Wranglers and in a lot of SUVs, they can make the cars shake and vibrate, and get people to stare.
Car subwoofers can also be as small as 6.5"... So as you can see, the bass reflects of more areas in a car, thus giving a drastically improved bass response because the smaller area. So you don't need to get a 10" or 12" necessarily to get your car to vibrate. -Tubes VS. Box Enclosures- *Tubes - The only brand that makes tubes is Bazooka. Many of the tubes have built-in amplifiers, they are easy to move, and they are quite inexpensive. They are popular because of their simplicity and price. These will create bass, but not the cleanest or lowest hitting bass out there. So if you're into music, then these aren't for you. If you want something to just pound, then these are quite good. However, you can do better with box enclosures.

*Box Enclosures - Box enclosures are when you buy either a ported or sealed enclosure, and put in however many drivers the box can hold. You can get one that holds either one, two, or three. Many people uses sealed enclosures because they are the smaller one of the two, but I use a ported in my car. Unlike tubes, with boxes, you can add whichever brand of woofers you want, and your own amplifier. However, this can be a more difficult task than just putting in a tube. But, you get much more versatility. Whether you're setting up a budget or audiophile sub hook-up, a majority of the people will use box enclosures. -The Different Materials-

*Different subwoofers are made out of different materials. Many of the more inexpensive and common subs are built out of paper cones. These will generally handle the job well, but there will be more distortion, but the price difference is quite large. Polypropylene is becoming quite of a popular polymer, it is higher quality than paper, and still quite inexpensive.

Building your own subwoofer box

2007-11-02T09:10:00.000-07:00

An enclosure does more than simply hold the woofer; it is an integral part of the system. A properly sized and built enclosure can turn an inexpensive woofer into a good performer, while a poorly designed or constructed enclosure will make even the finest woofer sound like mud. There are two main challenges in fabricating an enclosure — making sure it contains the proper volume of air, and controlling the cabinet resonances that otherwise will compete with the sound from the woofer and color its sound.

The ideal volume of an enclosure (length x width x height) will vary depending upon the woofer you select. The enclosure volume for your woofer is usually quoted as internal volume. Therefore, in calculating the overall external dimensions of the box, you must take into account the thickness of the board, the space occupied by the speaker and any internal bracing.

Once you know the internal volume you want to achieve, you'll decide on the dimensions of the enclosure. As a rule of thumb, make sure no internal dimension measures more than three times that of any other. But don't make them too close to each other or you will have a cube — one of the worst acoustic shapes for a speaker.

Finally, determine whether your box will be sealed or ported. A sealed box is the easiest to design and build, and protects the woofer against subsonic bass that can affect its performance. A ported box uses a tube (port) that reinforces the bass produced by the woofer. It can offer excellent, high-output performance, but is more challenging to construct.

Wiring and break-in

2007-11-02T09:09:00.000-07:00

If you go with the most common type of subwoofer installation — a component sub in a box hooked to an amplifier — you will have to consider various wiring possibilities before you start.

A 2-channel amplifier gives you outputs for two speakers. Of course, that doesn't mean you have to connect two subwoofers. You can hook up one, two, or maybe even four. To be safe, you just need to be aware of the impedance of your subs and the "load" capability of your amplifier. These factors will determine which wiring method you should use.
Typically, a car stereo amp "sees" a 4-ohm impedance. When we say an amplifier is stable down to 2 ohms, we're usually referring to the minimum impedance it can handle in stereo (2-channel) mode, not bridged (mono) mode. The lower the impedance (resistance or "load") an amplifier sees, the more power it produces, and the louder your music plays.

A common way to get a 2-ohm stable amp to produce the extra power it delivers at lower impedance is to wire your speakers in parallel. Remember — while series wiring always raises your impedance, parallel wiring always lowers it.

To wire your speakers in parallel, connect the positive (+) leads of both speakers to the amplifier's positive (+) terminal, and the negative (-) leads of both speakers to the amp's negative (-) terminal. You can increase your system's impact dramatically by hooking up two subwoofers (in parallel) to each of your amp's channels.

After you complete the wiring, break in your subwoofer properly. Play the sub at low volume for approximately 20 hours to condition it before you turn up the volume. This will improve the sub's performance and lifespan.

Pre-fabricated sub enclosures

2007-11-02T09:05:00.001-07:00

While ready-made subs have many advantages, you will have a greater choice of subs if you choose a component subwoofer and an appropriate enclosure. You choose the subwoofer or subwoofers that suit your musical needs best, and then select the box size that will optimize their sonic properties. You will find that most component subwoofers do not come with any hardware. If the enclosure you purchase does not have hardware either, you might have to provide your own screws. Also, you might need speaker wires and hardware to connect the speaker to the terminal cup in the box. Finally, find some brackets or straps to hold the enclosure in your vehicle.

Ready-made subs

2007-11-02T09:02:00.000-07:00

Ready-made subwoofers are a fast, easy way to achieve better bass. The manufacturer already has built the box and installed an appropriate speaker. Some ready-made enclosures have as many as three subs in them. You pick the style and size you like, and match it to your amplifier, your available space, and the rest of your system.

In sedans, ready-made, non-amplified subwoofers usually go in the trunk. If you're feeding it adequate power, the bass it produces will be strong enough to penetrate through the back seat. Just connect the speaker wires from the amplifier and secure the enclosure with straps or brackets. Make sure you don't limit access to your spare tire, or cut through the gas tank or brake line if you drill holes for brackets.

Powered subwoofers
Powered, or amplified, subs offer an ease-of-use that's handy if you drive a rented or leased vehicle. Because of their portability, these subs can be removed quickly if you sell or exchange your vehicle. They also take up less space than a separate amplifier and subwoofer.

If you're installing a subwoofer that comes with a built-in amp, you won't have to hook up speaker wires, but you will have to install a patch cord (or tap into your speaker leads for the input signal). You'll need an amplifier wiring kit for power, ground and turn-on leads. That usually means you will need to run wire under your seats.

Be extra careful to anchor a subwoofer in a hatchback, station wagon, or sport utility vehicle. It could become airborne and injure someone if you stop suddenly.

Basic subwoofer installation

2007-11-02T09:00:00.000-07:00

Subwoofers are specialized speakers that reproduce low notes. They're a popular component in many audio systems because they produce deep, strong bass. Also, they help you use your other speakers more efficiently by diverting notes that full-range speakers strain to reproduce.

Subwoofers come in a variety of sizes and shapes. The most common type is an unpowered, component subwoofer. This subwoofer lacks a built-in amplifier as a power source, so you will need to hook it to an external amp to draw current. (Some subs have built-in power supplies. See page 3). Also, while some subwoofers can be used without a separate box in space-saving free-air installations, most require a strong enclosure to operate properly.

The most basic element of component subwoofer installation is a snap. Mount your component subwoofer to an appropriate enclosure by connecting the leads to the terminal cup, and using mounting screws. It shouldn't take more than a few minutes. You'll then run the wiring to a nearby amplifier. You'll have choices of how you wire your sub. You can wire in parallel for maximum output, or series for a higher-impedance, multiple woofer setup.

Tools that you'll need

2007-11-02T08:57:00.000-07:00

You need some basic tools to mount your subwoofer in an enclosure, and connect it to your system. At a minimum, you should have:

JVC CS-GD4250

2007-11-02T08:49:00.001-07:00

The 600W max power output from this 25cm subwoofer adds a resonant, powerful punch to any in-car system.

Features of the JVC CS-GD4250 include:

Max. Music Power: 600W
Carbon Fibre Composite Olefin Cone
High-Density Foam Edge
Strontium Magnet
Nickel-Plated Screw Terminals

JVC CS-DX25

2007-11-02T08:47:00.000-07:00

Attractive whichever way round you mount it, this 25 cm sub will turn heads as you cruise around. The low-bass performance is controlled and the high power handling capability means it will pump all day and night if it has to, at a whopping 1,200W!

Features of the JVC CS-DX25 include:

Max. Music Power: 1,200W
Aluminium Diaphragm + Paper Cone
Aircooling System
Aluminium Die-Cast Frame
Dual-Input Voice Coil
Butyl Rubber Edge
Strontium Magnet
Nickel-Plated Screw Terminal

Infinity K PERFECT 12.1

2007-10-17T12:59:00.000-07:00

300mm Subwoofer.

Features of the Infinity K PERFECT 12.1 include:

Configuration: 12"
Power Handling: 350W RMS
Sensitivity: 96dB 2.83V/1m in car@40Hz
Frequency Response: 18 - 150Hz
An aluminum woofer cone is used, mounted to a precision die-cast aluminum basket using a high roll butyl surround. The basket is vented to provide additional cooling of the motor structure.
Mounting Depth: 6.5"
Maximized for performance in small sealed, vented, and bandpass enclosures. Check out the suggested Box and Parameter Sheet available for download.
Nominal Impedance: 4 ohms
Kappa Perfect truly bridges the gap between subwoofers intended for SPL and those intended for sound quality. If you're looking for a subwoofer that sounds great and hits hard, look no further.
Fs (Hz): 23.32
A huge flared, polished and vented polepiece is used to provide optimum cooling of the voice coil and minimize turbulence.
Qts: 0.44
14mm linear one-way excursion makes the Perfect10.1 ideal for high output applications.
Vas (liters): 83.28
Xmax (mm): 14.15
Levc@1kHz (mH): 3.05

Infinity K PERFECT 10.1

2007-10-17T12:58:00.000-07:00

250mm Subwoofer.

Features of the Infinity K PERFECT 10.1 include:

Power Handling, Peak: 1400W
Power Handling, RMS: 350W
Sensitivity: 94dB (In Car)
Frequency Response (± 1.5dB): 18Hz - 150 Hz
Frequency Response (± 3dB): 18Hz - 150Hz
Impedance: 4 Ohms
Mounting Depth: 6"

Infinity BASSLINK X

2007-10-17T12:56:00.000-07:00

250mm Active Subwoofer. Infinity,has adapted the technology developed for the finest home-audio loudspeakers to create BassLink, a groundbreaking automotive powered subwoofer. BassLink sets a new standard for in-vehicle bass reproduction. BassLink features a 200W Class D subwoofer amplifier that provides all the horsepower needed to drive the 10" subwoofer/10" passive radiator combination, four low-level inputs provide non-fading bass. Four high-level inputs also provide non-fading bass and the ability to easily interface BassLink with most factory sound systems. BassLink can be mounted vertically or horizontally thanks to its unique mounting system. Basslink provides user-adjustable input sensitivity, crossover frequency and bass-boost, allowing BassLink's performance to be optimized for any installation.

Features of the Infinity BASSLINK X include:

Power outpt: 200 watts RMS Class D Amplification
Drivers: 10" woofer and 10" passive radiator
Bass EQ Adjustment: +3dB to -6dB @ 45hz
Variable Electronic Crossover: 50hz-100hz High Cut @ 12dB per octave slope
Frequency Response: 20Hz-120Hz
Input Sensitivity Line Level: 50mV to 4V
Input Sensitivity Speaker Level: 1V to 16V
Fuse Value: 25A
Maximum Current Draw: 12A
Quiescent Current Draw: less than 800mA

Infinity BASSLINK T

2007-10-17T12:55:00.001-07:00

250mm Subwoofer, Dual 250mm Passive Radiators.

Features of the Infinity BASSLINK T include:

Power Output: 250W
Frequency Response (± 3dB): 10Hz � 150Hz
Variable Bass EQ: +3dB to -6dB at 45Hz
Variable Electronic Crossover: 70Hz � 170Hz
Phase control: 0 or 180 degrees
Preamp Level Inputs: 250mV � 4V
Dimensions (H x W x D): 1026mm x 164m

Infinity 1020W

2007-10-17T12:53:00.000-07:00

Infinity's powerful polypropylene woofer cone is at the heart of its Reference Series 1020w 10" subwoofer. It joins with a large, dual-stacked magnet assembly to crank out clear, efficient bass at a price that will surprise you.The high-roll rubber surround extends bass response and speaker life. If you're into loud bass, listen up! A whomping 11.9 millimeter X-max delivers exceptional excursion, this woofer is great for high SPL applications.

Features of the Infinity 1020W include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 10"
Nominal Power Handling - 250 Watt
Technical Features:
Peak Power Handling - 1000 Watt
Frequency Respond - 800 Hz - 22,000 Hz
Sensitivity - 90 dB
Impedance - 4 ohm
Components:
Surround Material - Rubber
Mounting:
Top Mounting Depth - 5.50 In

Hifonics Zeus HZ12

2007-10-17T12:52:00.001-07:00

The most popular Hifonics subwoofer features an extra-wide surround, an aluminum cone, double stacked magnets, and large push pin terminals for a secure wire connection. The 12" wide surround provides incredible excursion and Zeus may be the finest subwoofer you will ever own. Zeus delivers ground pounding bass and works in sealed, small ported and large ported boxes.

Features of the Hifonics Zeus HZ12 include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 12"
Nominal Power Handling - 450 Watt
Technical Features:
Peak Power Handling - 800 Watt
Sensitivity - 89.90 dB
Impedance - 4 ohm
Components:
Woofer Material - Metal
Surround Material - Rubber
Mounting:
Top Mounting Depth - 6.00 In.
Mounting Diameter / Length - 2.00 In.

Hifonics Zeus HZ10

2007-10-17T12:50:00.000-07:00

The most popular Hifonics subwoofer features an extra-wide surround, an aluminum cone, double stacked magnets, and large push pin terminals for a secure wire connection. The 10" wide surround provides incredible excursion and Zeus may be the finest subwoofer you will ever own. Zeus delivers ground pounding bass and works in sealed, small ported and large ported boxes.

Features of the Hifonics Zeus HZ10 include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 10"
Nominal Power Handling - 350 Watt
Technical Features:
Peak Power Handling - 700 Watt
Impedance - 4 ohm
Components:
Woofer Material - Metal
Surround Material - Rubber
Mounting:
Top Mounting Depth - 6.00 In.
Mounting Diameter / Length - 2.00 In

AudioBahn AWC12

2007-10-17T12:49:00.001-07:00

Features of the AudioBahn AWC12 include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 12.0"
Nominal Power Handling - 500 Watt RMS
Frequency Response - 25 Hz - 800 Hz
Sensitivity - 92.9 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Poly / Plastic
Magnet Material - Strontium Ferrite
Surround Material - Rubber
Top Mounting Depth - 5.06 In.
Bottom Mounting Depth - 10.88 In.
Mounting Diameter / Length - 12.5 In

AudioBahn AW1571

2007-10-17T12:48:00.001-07:00

Features of the AudioBahn AW1571 include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 15"
Nominal Power Handling - 500 Watt RMS
Peak Power Handling - 1000 Watt
Frequency Response - 21 Hz - 1 kHz
Sensitivity - 93.4 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Paper
Magnet Material - Strontium Ferrite
Surround Material - Foam
Top Mounting Depth - 6.88 In.
Mounting Diameter / Length - 15.38 In.

AudioBahn AW150T

2007-10-17T12:47:00.001-07:00

Features of the AudioBahn AW150T include:

Car Speaker Type - Component
Car Speaker Function - Subwoofer
Size - 15"
Nominal Power Handling - 600 Watt RMS
Peak Power Handling - 1200 Watt
Frequency Response - 22 Hz - 700 Hz
Sensitivity - 94 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Paper
Surround Material - Foam
Top Mounting Depth - 6.07 In.
Mounting Diameter / Length - 13.75 In

Alpine SWL-1042

2007-10-17T12:44:00.000-07:00

10" (25cm) Subwoofer (4Ohm).

Features of the Alpine SWL-1042 include:

Full metal 5-way binding posts with fixed nuts that take up to 10 mm2 blanc cable or spades or 4mm bananas
Polished Chrome back-plate
Double stontium magnet, 115 oz
Fibre-enforced double layer membrane
8" black Nomex spider
Edge suspension of butyl rubber
Thoroughly stiffened solid steel frame
High linear excursion for max. SPL
Vented pole & back vented spider
10" Woofer with dual layer 4 Ohm voice coil
150W RMS / 500W max.
High Power Handling

Alpine SWD-3000

2007-10-17T12:42:00.001-07:00

12" (30cm) Powered Subwoofer Box (4O). Featuring a built-in MRP-M350 V-Power mono amp with thermal management, this subwoofer box delivers extreme no-shutdown power for huge, dynamic bass-to satisfy the most serious, demanding bass lovers.

Features of the Alpine SWD-3000 include:

350W Peak Power
Frequency Response: 35 Hz-200Hz (-24dB/oct.)
12" (30cm) Cone Woofer
LPF Control
GAIN Control
Speaker and Line/RCA Inputs
Variable BASS EQ
4V Input Ready

Alpine SWD-2030

2007-10-17T12:40:00.001-07:00

Product Rating Dual 8" (20cm) Passive Radiator Design Powered Subwoofer Box (4O). Highly powerful yet surprisingly compact, this efficient unit uses two passive cones on the sides in addition to the active main cone to provide exceptionally high-quality, tight and accurate bass response.

Features of the Alpine SWD-2030 include:

Class-D Amplified Subwoofer
Dimensions: 292(w) x 241/357(h) x 250/381(d) mm
Diagnostic display
Easy "one-plug" connector
+/- 12V Power input
Remote input
High-power (speaker level) input
RCA input (4V input compatible)
Auto-On/Off selector (On function by remote signal or music signal)
Selectable input (RCA or High-Power/Speaker)
Phase Shift 0-180° adjust
Low pass filter adjust 50-150Hz 12dB
Level adjust (GAIN control)
Soft limiter function
System-tuned subsonic filtering
Integrated ICEpower class-D amplifier with very low heat dissipation
Two passive drivers
8" sealed subwoofer
350W Peak Power
150W RMS/250W max.
Overload protection circuit

Alpine SWD-2000

2007-10-17T12:38:00.000-07:00

8" (20cm) Powered Subwoofer Box (4Ohm). The SWD-2000 uses an MRP-M350 V-Power Class-D mono amp, and delivers powerful yet tight and accurate bass�and is an excellent easy-to-install upgrade solution for existing factory systems.

Features of the Alpine SWD-2000 include:

Dimensions 350 x 300 x 198 mm
350W Peak Power
Frequency Response: 50Hz-200Hz (-24dB/oct.)
8" (20cm) Cone Woofer
LPF Control
GAIN Control
Speaker/RCA Input
Variable BASS EQ
4V Input Ready

Alpine SBR-1242SB

2007-10-17T12:36:00.000-07:00

Subwoofer with Sealed Enclosure (4Ohm + 4Ohm).

Features of the Alpine SBR-1242SB include:

RMS Power: 500W
Peak Power: 1500W
KTE-12WG (opt.)
12" (30cm) Type-R Subwoofer SWR-1242D Included
Subwoofer designed and engineered in the USA
Compact size sealed box design (around 27 liters)
Subwoofer mounted, wired and tested � ready to use
Subwoofer mounted and fixed with High-Q bolts and nuts
High Density Fibreboard/Wood for resonance-free operation
High Quality speaker-wire terminals
Slanted back for easy trunk mount
Attractive see-through plexiglass window with custom cast basket and magnet view

Alpine SBR-1241SB

2007-10-17T12:31:00.000-07:00

These extraordinarily powerful subwoofers are perfect for reproducing the strong low frequency output of the Bass Engine® head units and the V12 amplifiers. Exceptionally strong and durable, thanks to the Kevlar reinforced pulp cone, they also feature a high excursion Santoprene® edge, delivering over 2" peak-to-peak excursion.

Features of the Alpine SBR-1241SB include:

Type Component
Elements 1-Way
Function Subwoofer
Size 12"
Nominal Power Handling 300 Watt
Technical Features
Peak Power Handling 1000 Watt
Impedance 4 ohm
Components
Woofer Material Paper
Mounting
Enclosed

Sony XSAW200

2007-10-03T12:20:00.001-07:00

Features of the Sony XSAW200 include:

XSAW200X active powered subwoofer enclosure.
Built in amplifier.
Max power output 200 watts.
Built in low pass crossover 50.200Hz variable. 20cms.
Injected polypropylene woofer.
Strontium ferrite magnet.
Sensitivity 86db/W/M.
Enclosure volume 13 litres.
Dimensions: 72.2 x 24.6 x 25.8cms.

Sony XSL1236

2007-10-03T12:18:00.000-07:00

Low distortion and high output are crucial in the creation of truly righteous bass. Sony built the Santoprene rubber surround of the Xplod XS-L1236 12" subwoofer with stroke stabilizers for maximum accuracy under the most punishing conditions.The 4-layer voice coil is constructed for higher power handling, with twice the copper wire of most woofers in its class. The highly-rigid polypropylene cone punches out impressive, accurate bass.

Features of the Sony XSL1236 include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 12.00"
Nominal Power Handling - 300 Watt
Technical Features:
Peak Power Handling - 900 Watt
Frequency Respond - 20 Hz - 2,500 Hz
Impedance - 4 ohm
Components:
Magnet Material - Strontium Ferrite
Surround Material - Rubber
Mounting:
Mounting Diameter / Length - 11.81 In.

Sony XSL152P5S

2007-10-03T12:17:00.001-07:00

Features of the Sony XSL152P5S include:

38cm enclosure type subwoofer
Pentagon structure for high strength and rigidity
Rubber surround with stroke stabiliser
1500W peak power
450W rated power
Injected Polypropylene diaphragm

Sony XSAW81P5

2007-10-03T12:15:00.002-07:00

In your car it's all about the bass, and subwoofers are your biggest allies in achieving the sound your neighbors fear. Subwoofers come in a variety of sizes, ranging from 8 to 15 inches -- the larger the subwoofer, the more air it moves and the more bass it can kick.

Features of the Sony XSAW81P5 include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 8"
Powered
Technical Features:
Peak Power Handling - 200 Watt
Components:
Woofer Material - Poly / Plastic
Mounting:
Enclosure - Enclosed

Sony XS-L121P5S

2007-10-03T12:15:00.001-07:00

Features of the Sony XS-L121P5S include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 12"
Nominal Power Handling - 350 Watt RMS
Peak Power Handling - 1200 Watt
Frequency Response - 18 Hz - 2 kHz
Sensitivity - 89 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Poly / Plastic

Pioneer TS-WX206A

2007-10-03T12:14:00.001-07:00

For those customers who want powerful bass sound, but don't want to sacrifice their boot space, then this high performing - yet compact - model is on the mark. Its compact design makes easy and flexible installation possible. And no matter how much luggage is packed in the boot, the large-sized aluminium die-cast heat sink keeps cool. A MOSFET 150 W amp improves amplifier performance and reproduces massive power bass. With large exhaust-like dual ports, the TS-WX206A looks and performs the part of a true muscle amp: producing the higher SPL that tuning fans want in their car.

Features of the Pioneer TS-WX206A include:

Bandpass Amplified Subwoofer
Built-in MOSFET 150 W power amplifier
20 cm Ø IMPP composite cone woofer with Strontium Magnet
Large dual port bandpass design
RCA/speaker level inputs
Input level control/phase switch
Built-in variable LPF (50 - 125 Hz, -12 dB/Oct)
Aluminium die-cast heat sink
Nominal output power: 60 W
35 - 200 Hz, 107 dB (in-car), max SPL 128 dB (in-car)
Frequency response - 35 - 200 Hz
Sensitivity (1W/1m) - 107 dB
Maximum Power - 150 Watt
Woofer size (cm) - 20 cm
Woofer material - IMPP composite cone woofer with Strontium magnet
Built-in amplifier - 150 Watt
Built-in variable LPF (50-125 Hz, -12dB/oct.)
Enclosure Volume - 18 liter
Input gain control / phase switch
RCA/speaker level inputs
Dimensions (W x H x D) - 274x316x412 mm

Pioneer TS-W5000SPL

2007-10-03T12:12:00.001-07:00

Pioneer is a world leader in digital entertainment products. Today Pioneer is recognized as a leader in technology advancements in the consumer electronics industry. Pioneer is respected for its role in such innovations as interactive cable TV, the Laser Disc player, developing the first Compact Disc player for the car and the first detachable face car stereo, DVD and DVD recording, plasma display, and organic electroluminescent display. The company's strength in optical disc and display technology is complemented by its state-of-the-art software products and manufacturing capabilities.Pioneer TS-W5000SPL speakers have an overhung surround design and contain Interlaced carbon fiber reinforced IMPP cone woofer, wide-roll, woven aramid fiber radial rubber surround and ceramic-coated voice coil wire.

Features of the Pioneer TS-W5000SPL include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 12"
Nominal Power Handling - 2000 Watt
Technical Features:
Peak Power Handling - 5000 Watt
Frequency Respond - 18 Hz - 2,000 Hz
Sensitivity - 88 dB
Impedance - 8 ohm
Components:
Woofer Material - Composite
Surround Material - Rubber
Mounting:
Top Mounting Depth - 10.47 In

Pioneer TS-W306C

2007-10-03T12:11:00.001-07:00

Sublime power is within your grasp - with Pioneer a-Ccelerate subwoofers. The redesigned and improved cone, cast in composite IMPP using interlaced Aramid fibre, features a patent-pending technology, to bring you all the punch and clarity you'll ever need. Total precision can be yours, even at kicking volumes. Build your high performance system with a larger or smaller enclosure volume - with a-Ccelerate's increased flexibility, the choice is yours. Connect thick cables for that power boost you've always wanted - a totally safe operation, with Pioneer's specially designed magnet cover and push terminals. Pioneer spells pure power, and sonic satisfaction.

Features of the Pioneer TS-W306C include:

C-Type Subwoofer
Composite IMPP cone using interlaced Aramid fibre with reinforcement arcs
Wide-roll, 3-layer fibre woven radial surround
Dual mass high power magnet
Extended and vented pole yoke
Enclosure use
Optional accessories:
UD-G306 spoke grille
UD-W301S custom enclosure box
Ohm Rating: 4?
Frequency response - 18 - 5000 Hz
Sensitivity (1W/1m) - 89 dB
Qts - 0.42
Recommended sealed enclosure (Litres) - 24 - 49.6
Lowest resonance frequency (FS) - 32.6
Maximum Power - 1.000 Watt
Nominal input power - 400 Watt
Vas - 55.6 l
Woofer size (cm) - 30 cm

Pioneer TS-WX22A

2007-10-03T12:10:00.001-07:00

An extremely compact, slim-designed subwoofer, the TS-WX22A focuses on flexibility and functionality. Users can place this 20 cm subwoofer vertically or horizontally. It takes up a minimum amount of space in the boot or virtually disappears under the seat. Its compact size packs overwhelming performance punch though. A quality MOSFET 150 W amplifier matched to its 20 cm woofer design provides massive powerful bass, while a cabinet-reinforcing aluminium die-cast heat sink is responsible for its distortion-les, top sound performance. The sleek design concept includes a wired remote control for easy gain, phase and LPF tuning.

Features of the Pioneer TS-WX22A include:

Sealed Amplified Subwoofer
Built-in MOSFET 150 W power amplifier
20 cm IMPP composite cone woofer
Sealed-type design
RCA/speaker level inputs
Aluminium die-cast heat sink
Nominal output power: 60 Watt
Available for vertical/horizontal installation
Heat-resistant 4-layer dual voice control
Frequency response - 40 - 200 Hz
Sensitivity (1W/1m) - 101 dB
Maximum Power - 150 Watt
Woofer size (cm) - 20 cm
Woofer material - IMPP composite cone woofer with Strontium magnet
Strontium Magnet
Built-in amplifier - 150 Watt
Built-in variable LPF (50-125 Hz, -12dB/oct.)
Enclosure Volume - 5 liter
RCA/speaker level inputs
Dimensions (W x H x D) - 250 x 265 x 110 mm

Kenwood KSC-WA82RC

2007-10-03T12:08:00.000-07:00

Features of the Kenwood KSC-WA82RC include:

Detachable wired remote control unit with extension cable (6 m)
200mm blue-coated paper cone woofer
Remote controllable variable input sensitivity (gain)
Remote controllable variable low-pass filter cut-off frequency (60, 80, 120, 160 Hz)
Remote controllable phase reverse switch
Speaker level input from OEM car radio for easy up-grade
Gold-plated RCA input terminals
Supplied with mounting belt

Kenwood KSC-WA62RC

2007-10-03T12:05:00.001-07:00

Features of the Kenwood KSC-WA62RC include:

130mm gold-coated concave cone drive unit
165mm gold-coated concave cone passive radiator
Remote controllable variable input sensitivity
Remote controllable variable low-pass filter cut-off frequency (60, 80, 120, 160Hz)
Remote controllable phase reverse switch
Speaker level input from OEM car radio for easy up-grade
Horizontal or vertical installation capability
Supplied with mounting kit

Kenwood KFC-PSR51P

2007-10-03T12:04:00.001-07:00

High Performance Flush Mount Component Speaker Package

Features of the Kenwood KFC-PSR51P include:

130mm PBO*-Pearl Mica Diaphragm Cone Woofer (Silver Color)
Rubber Edge for High Durability & High Sound Quality
25mm Angle Adjustable Hypernyle Dome Tweeter
New Designed See-through External Crossover Network Unit
Tweeter Volume Level Adjustable (0/-2/-4dB)
Gold-plated Input Terminals (*PBO=Poly para-phenylene Benzobis Oxazole)

JBL GTO 1204BP

2007-10-03T12:00:00.001-07:00

Single 12" Bandpass Enclosure with built-in LED illumination. GTO enclosures feature 3/4" medium density fiberboard (MDF) construction, high-quality binding post terminals and GTO woofers. GTO enclosures are available in single or dual bandpass configurations. Unlike so many one-note-wonder enclosed subwoofers, GTO enclosures feature wide bandwidth design, which provides more output between 20Hz and 40Hz and ensures you get all the bass you've paid for.

Features of the JBL GTO 1204BP include:

Power Handling, RMS - 300 Watts
Power Handling, Peak - 1200 Watts
Sensitivity (2.83V @ 1m) - 93dB
Frequency Response - 30Hz - 150Hz
Impedance - 4 Ohms

JBL W15 GTI

2007-10-03T11:59:00.001-07:00

15" Differential Drive® Design Subwoofer.

Features of the JBL W15 GTI include:

Cast aluminum heat-sink cooled magnet system - for an extreme power handling
Differential Drive System - consisting of dual-edgewound voice-coil and dual-gap technology for a doubling of Power Handling, Sensitivity and an "electrical brake" to control cone motion at extreme excursions
more than +/- 20mm linear cone excursion - provides extremely high sound pressure levels
Symmetrical-Field-Geometry (SFG) - reduces distortions to minimum at any level
Aquaplas coated cone - for exceptionally stable performance even at extreme levels
Butyl rubber surround - for better sound quality and long durability
Two separate gold plated screw/plug terminals - provide long lasting electrical connections

Infinity REF 1240W

2007-10-03T11:57:00.000-07:00

300mm Subwoofer.

Features of the Infinity REF 1240W include:

Power Handling, RMS: 300 watts
Power Handling, Peak: 1200 watts
Sensitivity (2.83V/1m): 93dB
Frequency Response: 25Hz - 400Hz
Nominal Impedance: 4 Ohms
Voice-Coil Diameter: 51mm
Mounting Depth: 129mm
Cut-Out Diameter: 284mm

Infinity KAPPA PERFECT 12VQ

2007-10-03T11:55:00.002-07:00

300mm High-Output Subwoofer

Features of the Infinity KAPPA PERFECT 12VQ include:

Power Handling, RMS: 400 watts
Power Handling, Peak: 1600 watts
Sensitivity (2.83V/1m): 89dB
Frequency Response: 23Hz - 400Hz
Nominal Impedance: 4 Ohms
Voice-Coil Diameter: 77mm
Mounting Depth: 178mm
Cut-Out Diameter: 277mm

JBL P-1220

2007-10-03T11:55:00.001-07:00

Features of the JBL P-1220 include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 12"
Nominal Power Handling - 400 Watt RMS
Peak Power Handling - 1600 Watt
Frequency Response - 20 Hz - 450 Hz
Sensitivity - 91 dB
Impedance - 2 ohm (Dual Coil)
Woofer Material - Paper
Surround Material - Butyl Rubber

JBL P-1020

2007-10-03T11:54:00.001-07:00

Features of the JBL P-1020 include:

Car Speaker Type - Component
Car Speaker Function - Subwoofer
Size - 10"
Nominal Power Handling - 400 Watt RMS
Peak Power Handling - 1600 Watt
Frequency Response - 20 Hz - 500 Hz
Sensitivity - 89 dB
Impedance - 2 ohm (Dual Coil)
Woofer Material - Paper
Surround Material - Rubber
Top Mounting Depth - 6 In.
Bottom Mounting Depth - 6 In.
Mounting Diameter / Length - 9.19 In.

JBL GTO8626

2007-10-03T11:51:00.000-07:00

Features of the JBL GTO8626 include:

Car Speaker Type - Component System
Elements - 2-Way
Car Speaker Function - Subwoofer � Tweeter
Size - 6" x 8"
Nominal Power Handling - 60 Watt RMS
Peak Power Handling - 180 Watt
Frequency Response - 50 Hz - 21 kHz
Sensitivity - 90 dB
Impedance - 4 ohm (Dual Coil)
Tweeter Size - 1"
Surround Material - Butyl Rubber

Infinity BASSLINK

2007-10-03T11:49:00.000-07:00

Infinity, the inventor of servo-controlled subwoofer systems, has adapted the technology developed for the finest home-audio loudspeakers to create BassLink, a groundbreaking automotive powered subwoofer. BassLink sets a new standard for in-vehicle bass reproduction. BassLink can be mounted vertically or horizontally thanks to its unique mounting system. Basslink provides user-adjustable input sensitivity, crossover frequency and bass-boost, allowing BassLink's performance to be optimized for any installation.

Features of the Infinity BASSLINK include:

200W Class D subwoofer amplifier that provides all the horsepower needed to drive the 10" subwoofer/10" passive radiator combination.
Four low-level inputs provide non-fading bass. Four high-level inputs also provide non-fading bass and the ability to easily interface BassLink with most factory sound systems.
Power outpt: 200 watts RMS Class D Amplification
Drivers: 10" woofer and 10" passive radiator
Bass EQ Adjustment: +3dB to -6dB @ 45hz
Variable Electronic Crossover: 50hz-100hz High Cut @ 12dB per octave slope
Frequency Response: 20Hz-120Hz
Input Sensitivity Line Level: 50mV to 4V
Input Sensitivity Speaker Level: 1V to 16V
Fuse Value: 25A
Maximum Current Draw: 12A
Quiescent Current Draw: less than 800mA

AudioBahn AW151T

2007-10-03T11:48:00.001-07:00

Features of the AudioBahn AW151T include:

Car Speaker Type - Component
Car Speaker Function - Subwoofer
Size - 15.5"
Nominal Power Handling - 650 Watt RMS
Peak Power Handling - 1300 Watt
Frequency Response - 22 Hz - 700 Hz
Sensitivity - 94 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Paper
Magnet Material - Strontium Ferrite
Surround Material - Foam
Top Mounting Depth - 7.13 In.
Mounting Diameter / Length - 14 In.

AudioBahn AW1251SE

2007-10-03T11:47:00.001-07:00

Features of the AudioBahn AW1251SE include:

Car Speaker Type - Component
Elements - 1-Way
Car Speaker Function - Subwoofer
Size - 12"
Nominal Power Handling - 400 Watt RMS
Frequency Response - 24 Hz - 1 kHz
Sensitivity - 92.1 dB
Impedance - 4 ohm (Dual Coil)
Woofer Material - Paper
Magnet Material - Strontium Ferrite
Surround Material - Foam
Top Mounting Depth - 5.25 In.

AudioBahn AW1251

2007-10-03T11:45:00.000-07:00

Features of the AudioBahn AW1251 include:

Car Speaker Type - Component
Car Speaker Function - Subwoofer
Size - 12.5"
Nominal Power Handling - 400 Watt RMS
Frequency Response - 24 Hz - 1 kHz
Sensitivity - 92.1 dB
Woofer Material - Paper
Magnet Material - Strontium Ferrite
Surround Material - Foam
Mounting Diameter / Length - 10.88 In.

Alpine SWX-1042D

2007-10-03T11:42:00.000-07:00

The Type-X subwoofers deliver maximum excursion with unbelievable sound quality through the use of a High Amplitude Multi-Roll (HAMR) Surround. The combination of the HAMR Surround and the woofers carbon fiber and aluminum honeycomb cone provides the optimal combination for huge output and tight sound quality.

Features of the Alpine SWX-1042D include:

Type - Component
Elements - 1-Way
Function - Subwoofer
Size - 10"
Nominal Power Handling - 1000 Watt
Technical Features:
Peak Power Handling - 3000 Watt
Frequency Respond - 24 Hz - 200 Hz
Sensitivity - 81 dB
Impedance - 4 ohm
Components:
Woofer Material - Composite
Magnet Material - Strontium Ferrite
Surround Material - Santroprene
Mounting:
Top Mounting Depth - 8.63 In.
Bottom Mounting Depth - 9.81 In.

Alpine SWS-1242D

2007-10-03T11:41:00.001-07:00

12" (30cm) Subwoofer (4Ohm+4Ohm).

Features of the Alpine SWS-1242D include:

KTE-12WG (opt.)
Peak Power 900W
RMS Power 300W
Frequency Response: 26Hz � 1kHz
Aluminum Coated Poly Parabolic Dust
Extra Rigid Custom Steel frame with Integrated Leg Vent System
Dual Voice Coil Design, 4-Layer High Temp Wire on High-Strength Brass Former
FEA Optimized Motor Structure with CRC Geometry
Extended Dual Flare Vented Pole
FEA Optimized Mirrored Progressive Nomex® Spiders with Integrated Tinsel Leads
FEA Optimized High Excursion Injected Santoprene® Surround
Double Stacked Magnets
One-Sided Terminal Layout
Heavy-Duty 10mm2 Push Terminals with Connection Jumpers
Hidden Screw Gasket
Designed and Engineered in the USA

Alpine SWR-1222D

2007-10-03T11:39:00.000-07:00

12" (30cm) Subwoofer (2Ohm+2Ohm).

Features of the Alpine SWR-1222D include:

Peak Power 1500W
RMS Power 500W
Frequency Response: 24Hz - 500kHz
High Excursion 1" Santoprene Edge
Kevlar Reinforced Pulp Cone
Dual Progressive Nomex Spiders with Edge Control
Integrated Tinsel Lead Spider Design
Custom Cast Aluminium Frame with Integrated Heat Transfer Plate
Extended Length Dual-Flared Vented Pole Design
High-Strength Brass Voice Coil Bobbin
Heavy-Duty 10cm2 Push Terminals
Computer Optimized Magnetic Circuit
Designed and Engineered in the USA

Alpine SWL-1242

2007-10-03T11:38:00.001-07:00

12" (30cm) Subwoofer (4Ohm).

Features of the Alpine SWL-1242 include:

12" Woofer with dual layer 4 Ohm voice coil
Full metal 5-way binding posts with fixed nuts that take up to 10 mm2 blanc cable or spades or 4mm bananas
Polished Chrome back-plate
Double stontium magnet, 115 oz
Fibre-enforced double layer membrane
8" black Nomex spider
Edge suspension of butyl rubber
Thoroughly stiffened solid steel frame
High linear excursion for max. SPL
Vented pole & back vented spider
Peak Power 800W
RMS Power 250W
High Power Handling

Alpine SWD-1600

2007-10-03T11:25:00.001-07:00

6,5" (16,5cm) Dual Load Design Powered Subwoofer Box (4Ohm). This compact subwoofer fits nicely in the front cabin area�to complement an existing subwoofer system with additional front-focused bass, or to serve as the main subwoofer in smaller installations.

Features of the Alpine SWD-1600 include:

GAIN Control
Crossover 60-160Hz
Phase Selector
Class D Built-in Power Amplifier
Dual Load Subwoofer
Weight 4.0 kg
Dimensions 282 x 195 x 92 mm
Operation Voltage DC 14.4V
Input Impedance 22k ohms (line input)
36k ohms (speaker input)
Max Output 150W

Non-circular subwoofers

2007-10-03T11:15:00.000-07:00

Within the last few years, car audio has seen a few subwoofers using non-circular shapes from manufacturers such as Kicker, Sony, Bazooka, X-Tant, etc. There is no audible advantage to these shapes, and they may carry some distortion penalties. They can, in some situations (limited mounting space, for instance) give a slightly greater cone area and so slightly higher output at low frequencies. The intent of non-round subwoofers is to increase the surface area of the cone. In enclosures of a particular size, more subwoofer cone area is possible with some of these shapes, although the difference may be trivial. The increased cone area moves more air, producing higher sound pressure levels. However, these drivers are not optimized for maximum output level, so the advantage is largely theoretical. The effect of corners in their surrounds is to increase distortion.

An important factor in the "square sub vs round sub" argument is the effects of the enclosure used. In a sealed enclosure, all displacement is determined by

where V_d stands for volume of displacement, x_max to the amount of linear excursion the sub is mechanically capable of (in mm), and S_d to the cone area of the subwoofer (in $c m 2$ ). These are some of the Thiele/Small parameters which can often be found in the owner's manual or driver specifications. Because of the multiplication, excursion is as important as cone area to generate SPL. However, the importance of these parameters shifts if the subwoofer is used in a ported enclosure. When a subwoofer produces frequencies near the tuning frequency of the ported enclosure, excursion decreases and cone area becomes more important.

Car audio

2007-10-03T11:14:00.001-07:00

Automobiles are well suited to the "hidden" subwoofer approach due to space limitations in the passenger compartments. It's not possible, in most circumstances, to fit such drivers and enclosures into doors or dashboards. In addition, there are acoustic problems in most car interiors (e.g., too reflective, too small, too noisy at many frequencies, ...). Typically, subwoofers are installed in the trunk or back seat space.

Some car audio enthusiasts compete to produce very high sound pressure levels in the confines of their vehicle's cabin; sometimes dangerously high. The "SPL wars" have drawn much attention to subwoofers in general, but subjective competitions in sound quality ("SQ") have not gained equivalent popularity. Top SPL cars are not able to play normal music, or perhaps even to drive normally as they are designed solely for competition.

Even normal consumer-grade subwoofers are often capable of generating exceptionally high levels in cars due to the small volume of the typical car interior. High sound levels can cause hearing loss and tinnitus if one is exposed to them for an extended period of time.

Since much bass is felt, sub-bass can be 'augmented' using tactile transducers. These have recently emerged as a device class, called variously "bass shakers", "butt shakers" and "throne shakers". They are attached to a seat, for instance a drummer's stool ("throne") or gamer's chair or car seat, and the vibrations of the driver are transmitted to the body then to the ear via bone conduction. They connect to an amplifier like a normal subwoofer. They can be attached to a large flat surface (for instance a floor or window) to create a large low frequency conduction area, though the transmission of low frequencies through the feet isn't as efficient as the seat. The advantage of tactile transducers used for low frequencies is that they allow a listening environment that isn't filled with loud low frequency waves. This helps the concert drummer to monitor his or her kick drum performance without polluting the stage with low frequency waves from a subwoofer monitor. Bass shakers help the user avoid disturbing others nearby and help to augment the headphone listening experience. However, some feel that the felt vibrations are disconnected from the auditory experience.

Professional audio

2007-10-03T11:11:00.002-07:00

Professional audio subwoofers must be capable of very high output levels. This is reflected in the design attention given in recent years to the subwoofer applications for sound reinforcement, public address, and concert systems. Consumer applications (as in home use) are considerably less demanding due to much smaller listening space and lower playback levels. Subwoofers are now almost universal in professional sound applications such as live concert sound, churches, nightclubs, and theme parks. Specifically, movie theatres certified to the THX standard for playback always include high capability subwoofers. Some professional applications require subwoofers designed for very high sound levels, using multiple 15", 18" or 21" drivers. Drivers as small as 10" are occasionally used, generally in horn loaded enclosures.

People accustomed to bass in home audio systems and car audio may think the subwoofers in a concert system don't have much low frequency output, since the human ear recognizes loudness (ie, sound pressure) logarithmically. Concert subs can be 10 times the power rating which equates to 10 more deciBels, but will only be twice as loud. Sound intensity obeys the inverse-square law in relation to distance from the source, and at outdoor events the crowd is many metres away from. The human ear is less sensitive to sound at lower frequencies, so very high levels are needed to hear 20 or 25Hz sounds.

The main speakers may be 'flown' from the ceiling of a venue on chain hoists, and 'flying points' (ie, attachement points) are built into many enclosures. Since subwoofers are larger, heavier, and least localizable components, they can be stacked on the ground near the stage. These enclosures may contain several 18-inch drivers, and the enclosures are typically built from Baltic Birch, sourced from Finland, Estonia or Russia. This material is void free, has many plies, and is exceptionally durable. There can be more than 50 double-18-inch cabinets in a typical concert system.

Subwoofers may or may not be fed with signal from the main program mix, instead having kick drum, bass and keyboards routed to them. This avoids the low frequency 'drone' of feedback that can occur if the vocal microphone signals are reproduced by to the subwoofer system. Some concert sound companies use subwoofer systems made by the same manufacturer of the flying speakers, but many others select subwoofers from other manufacturers, better suited to their truck-pack, cost, or other criteria.

Servo subwoofers

2007-10-03T11:11:00.001-07:00

Some active subwoofers are also servo controlled, using a feedback mechanism which generates a signal based on the movement of the cone. The signal is used to correct for any deviations from the motion intended. Several manufacturers make servo subwoofer systems, usually accelerometer-based. The advantage of servo subwoofers is reduced distortion. The primary disadvantages are cost and complexity. A successfully implemented servo system addresses the limitations of conventional subwoofers:

mechanical non-linearities
thermal non-linearities
magnetic non-linearities

Active and passive

2007-10-03T11:10:00.000-07:00

Generating high output at low bass frequencies is a demanding task, so the driver, enclosure, and amplifier are designed to work together as a package. These subwoofers with a built-in amplifier are called Active or powered subwoofers. The amplifier in these units have built in crossover, phase, and sometimes equalizer capabilities.

Some amplifiers include an adjustable low-pass crossover, which limits the range of the subwoofer to low frequencies. For example, if a listener's main speakers are usable down to 80 Hz, then the subwoofer crossover can be set so the subwoofer only works below 80 Hz. The crossover section may also include a high-pass "infrasonic" filter that prevents the subwoofer driver from reproducing frequencies below its capabilities. The subwoofer phase control allows a listener to adjust the phase (time) alignment of the subwoofer system relative to the main speakers. Doing so eliminates or minimizes the acoustic cancellation between the subwoofer system and main speakers, the result of them not being in phase within the crossover region as heard at the listener's ear. Phase settings may be a two-position switch (0° or 180°) or a continuous adjustment between these two values.

Some subwoofers are built with their own internal amplifier. Designers of this type can add a degree of corrective equalization to ensure optimum performance. Some also include a user-adjustable equalizer that allows boost or cut output at certain frequencies, and these vary from a simple "boost" switch, to elegant parametric equalizers for detailed speaker and room correction. Some even include a calibrated microphone to measure the subwoofer's in-room response, so the automatic equalizer can correct the response to some pre-determined performance.

Passive subwoofers have a subwoofer driver and enclosure, but do not include an amplifier. They sometime include passive crossovers inside, with the filter frequency determined by the factory. These are used with third-party power amplifiers, taking their inputs from active crossovers earlier in the signal chain. While few home-theater-in-a-box systems use passive subwoofers, this format is still popular in the professional sound industry.

Overview

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Subwoofers use drivers (woofers) (typically between 8" and 18" in diameter) , but some have been as large as 60". Some drivers as small as 4" may be referred to as subwoofers but drivers less than 8" generally have neither the cone area nor excursion ability necessary to produce deep bass, especially in practical sized enclosures. The most common subwoofer sizes in professional audio are 12", 15" and 18".

All loudspeakers characteristically exhibit trade-offs between frequency response and response time (transient response) depending on the characteristics of the voice coil, properties of the magnetic motor, the cone mass, and the nature of the enclosure. While cone size and voice coil inductance are major factors, a recent study indicates that the role of inductance is more important than was previously believed. The effects of the cone mass are not significant at sub-bass frequencies.

With the advent of the CD, the demand to reproduce deep, clean, loud bass increased, and had increased again with the introduction of digital audio Surround sound formats like Dolby Digital and DTS, which make extensive use of subwoofers for special effects. In modern music, the subwoofer 'channel' is often used aggressively by producers to enhance the listening experience.

Subwoofers are available in several formats, including bass reflex, acoustic suspension, infinite baffle, horn loaded, tapped horn and bandpass types. Each enclosure topology design has advantages and disadvantages in efficiency, bass extension, and cabinet size. Bass-reflex enclosures are the most common type in domestic hi-fi and professional sound.

The fundamental difficulty for subwoofers is to couple the motion of the cone to the listening environment, while limiting cone excursion to safe levels, cooling of the voice coil, while minimizing distortion, and maximizing output. Since the human ear is increasingly insensitive as frequencies decrease, these requirements are hard to meet simultaneously.