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Alpine SWE-1242

12" Single 4 ohm Type-E Series Car Subwoofer

Discontinued
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This item has been discontinued

But you may be interested in the newest model that's available.

swe1243 thumbnail

Alpine SWE-1243

OUR PRICE: $79.95

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  • 750 Watts Peak Power Handling / 250 Watts RMS
  • Kevlar Reinforced Pulp Cone
  • High Excursion 3/4" Santoprene Surround
  • Oversized Parabolic Dustcap
  • Custom High-Strength Steel Basket
  • High Strength Brass Voice Coil Bobbin
  • Dual Progressive Nomex® Spiders with Integrated Tinsel Leads with Edge Control
  • Bumped Backplate
  • Voice Coil Diameter : 38mm
  • Mounting Depth (top mount) : 159mm (6.4"))
  • Mounting Diameter (top mount): 274mm (11")
  • Magnetic Weight: 64 oz
  • Recommended Box Types : Sealed/Bandpass
  • Recommended Sealed Box Volume : 0.6 - 1.25 cu. ft.
  • Impedance: 4 Ohm
  • Frequency Response : 28Hz - 1kHz
  • Sensitivity : 89 dB
  • 1-year SonicElectronix.com warranty

Product History:

Alpine SWE-12S4 thumbnail
(newest, current model)
Alpine SWE-1243 thumbnail
(previous model, replaced by Alpine SWE-12S4)
Alpine SWE-1242 thumbnail
(previous model, replaced by Alpine SWE-1243)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Type-E (Alpine)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
750 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
250 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Single
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
28 - 1000 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
89 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
23.4 mm
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Reinforced Pulp Cone
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene
Magnet Structure
Defines the overall structure of the subwoofers magnet.

Recommended Enclosure Specifications

Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
159mm (6.4")
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
274mm (11")

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
75%
4 Star
25%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
4.9
Features
4.5
Design
4.6
Usability
5.0
jv audio

san diego

Overall
Durability
Value
Features
Design
Usability
they still hit

July 11, 2012

i got 2 12s brand new yearsssss ago when they frist came out and i still have them and bump them every day. i want to say over 5 years of playing hard, they still sound the same as when i got them. i love alpine decks and amps. for my first pair of subs i love them too

0 of 0 found this helpful

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Eric

Parker, CO

Overall
Durability
Value
Features
Design
Usability
I have this sub right now!

March 4, 2008

I have this sub in my car currently. It definitely is worth the money. I pumped 750 watts through that bad boy and it handled it like it was nothing. Puts out incredibly strong and deep bass and doesn't distort no matter what. I love mine, it has lived up to my expectations.

0 of 0 found this helpful

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Tony

San Ramon, CA

Overall
Durability
Value
Features
Design
Usability
great bass quality!

December 26, 2007

This is a really powerful little sub for the buck. I use this installed in a bandpass box in my hatchback, and this thing SLAPS like no other. perfect for small cars that aren't sturdy enough to withstand thousands of watts. overall clear bass, and great quality.

0 of 0 found this helpful

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Tyler

wheat ridge , CO

Overall
Durability
Value
Features
Design
Usability
SUBS

October 18, 2007

My friend has 2 of these ran in the back of his durango.He has the nice stereo anyways but just these E's hit like no other.He has a 600w amp turned up 50% and when i ride with him, everyone looks.AMAZING!

0 of 0 found this helpful

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Robin

Lombard, IL

Overall
Durability
Value
Features
Design
Usability
Good Sub

August 21, 2007

I had two Type-E 10 inch subs and stepped it up the the 12's. I have them running by a MTX Thunder TA4501 amp at 500 rms and they pound even harder than the 10's with a much lower frequency potential. So whatever you listen to these will please you and at a very low price.

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Thomas

Boca Raton, FL

Overall
Durability
Value
Features
Design
Usability
Great Subs

March 3, 2007

My friend has two of these in a sealed box powered by an alpine amp, and let me say that they are the cleanest and loudest subwoofers you can find for your money!! Low cost, great sound. When I didn't know what kind of subs he had and after I listened to them he told me they were Type-E's, I was shocked. These babies really bang. I highly recomend them.

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Dan

Bellingham, WA

Overall
Durability
Value
Features
Design
Usability
Great sub for the price

March 1, 2007

I've owned this sub now for nearly a year, been very impressed with the fullness of the audio. I presently have two type E 12's running through a 650W Alpine mono amp and its enough to rattle the whole car. I would definitely recommend it for both great value and excellent sound quality.

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Joseph

North Tonawanda, NY

Overall
Durability
Value
Features
Design
Usability
Lots of Boom for your Buck

November 1, 2006

I just purchased this subwoofer, and let me say that you will not find a better sounding subwoofer for your money, I have compared it to many of my friends more expensive subs and this one is just as good for a fraction of the cost.

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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Alpine SWE-1242 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine SWE-1242 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Alpine SWE-1242 Subwoofers

4 Channel Amp

4 Alpine SWE-1242 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

SWE-1242

Weight

16.00lbs

Internal SKU

swe1242

Internal Product ID

7918

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine SWE-1242