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Alpine SWE-1243

12" Single 4 ohm Type-E Series Car Subwoofer

Discontinued
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This item has been discontinued

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Alpine SWE-12S4

OUR PRICE: $79.99

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Alpine SWE-1243

12" Single 4 ohm Type-E Series Car Subwoofer

$79.95

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Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

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NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

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20 Square Feet of Sound Dampening Material

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

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  • 12" Single 4 Ohm Type-E Series Subwoofer
  • Power Handling:
    • Peak: 750 watts
    • RMS: 250 watts
  • Impedance: Single 4 ohms
  • Woven fiber with Kevlar reinforced pulp cone woofer
  • Santoprene rubber surround
  • Concealed mount gasket system
  • Shallow mounting depth
  • Protective grille included
  • 16-gauge Insulated stranded leads
  • 8-gauge push-terminals
  • Airflow optimized with extended vented pole
  • FEA optimized design with compound radii
  • Progressive Nomex spider
  • 1.5" 4-Layer high temperature (180°C) voice coil wire on aluminum bobbin
  • 74oz. Magnet
  • Frequency response: 27-1000 Hz
  • Sensitivity: 86 dB
  • 1-year SonicElectronix.com warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

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).
27 - 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".
86 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.
11.7 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
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.
Woven Fiber with Kevlar Reinforced Pulp
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 Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.00 cubic feet
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.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.00 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 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.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.50 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.
5-5/8"
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.
10-5/8"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

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
71%
4 Star
25%
3 Star
4%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.9
Features
4.4
Design
4.5
Usability
4.9
Matt

Anna, OH

Overall
Durability
Value
Features
Design
Usability
bumptastic

December 23, 2008

My friend has two of these hooked up to a crunch amp. They hit pretty hard, and the clarity is amazing. a guy i know has 4 type r alpines, and they make his back windshield flex. alpine is the way to go, no doubt.

16 of 19 found this helpful

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Will

Greenville, SC

Overall
Durability
Value
Features
Design
Usability
Sick!!!!!!!

November 6, 2008

these subs are NASTY!!!!!!!!! i dont have them but my buddy does and they PUMP!!!!!!!!! at any store they are 120 each. but soo much cheaper here i recommend these for people buying their first set because they are sick for the price.

16 of 19 found this helpful

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Josh

Eastern North Carolina

Overall
Durability
Value
Features
Design
Usability
PUMP UP THE BASS!!!

March 13, 2011

YEAH BOY! Two of these in a custom ported box and damage was done.... Cracked my windshield from the reflex, my mirror broke (wouldn't stay in one position always tilting down) and it fell off. My meter reads at about 550 watts max per sub at close to full volume on the speakers. I get looks from everyone when I turn these BAD BOYS UP! Alpine is the way to go. Get some today. Make it 2 or 3 or 4...... either way these subs KICK OUT THE JAMS!

15 of 18 found this helpful

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ryan

Ionia, MI

Overall
Durability
Value
Features
Design
Usability
Best sub for less then 100$

December 23, 2010

This sub is very very clean on the bass ... I cranked it all the way up on a rf-500 and no distortion ... best sub under 100$ ... if ur on a budget .. buy it

15 of 18 found this helpful

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Pep

Tonawanda, NY

Overall
Durability
Value
Features
Design
Usability
Alpine Type E

February 25, 2011

For the price of the sub, its a good buy. I would recommend to buy two of them, it sounds so much better. but the con of buying them is that they seem fragile so don't push it with them.

14 of 17 found this helpful

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Bryce

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
Great sub for the price

July 4, 2010

You simply can't beat this sub for the price. I'm powering it with a little Rockford Fosgate 150-2 amp and it hits hard. I run it at half the power I was with my other setup (12" Apline Type-S and some cheap Power Acoustik amp) and it hits harder than the old setup ever did. Pair this sub up with a nice quality amp and it will produce some awesome bass that hits hard and still sounds clear for a fraction of the cost of the higher end stuff.

14 of 17 found this helpful

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Alan

Pueblo, CO

Overall
Durability
Value
Features
Design
Usability
Big Bang

June 11, 2009

Have two of these in a custom box and they bang. Good quality and value.

13 of 15 found this helpful

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thomas

tuckerton, NJ

Overall
Durability
Value
Features
Design
Usability
good

April 19, 2011

Good for the price you get what you pay for mid grade enough to feel the bass move

13 of 16 found this helpful

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Luke

Minneapolis, MN

Overall
Durability
Value
Features
Design
Usability
Very Clean

July 19, 2010

This sub is great. Definitely worth the price. It kicks out nothing but clean solid bass. Mine is in a 2 cubic ft custom ported box I built myself and it sounds so good. It is cleaner than JL. I really like how it comes with the grill too, it adds a smooth look to it. The best part about this sub is the cone composition. Very strong and very cool look. One of the best looking subs around in my opinion. Buy it and you won't be disappointed.

13 of 16 found this helpful

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Alex

Pittsburgh, PA

Overall
Durability
Value
Features
Design
Usability
Great sound

July 20, 2009

I started out with just one of these, but i blew it up in a week on accident. now i have two in a ported box, 3.2 ft^3 tuned to 33hz (or maybe it's 32 hz :P) running at 2 ohms. with the volume at 20/35, i can't use my mirrors and my head starts to hurt. absolutely amazing quality for bargain prices. alpine all the way.

13 of 16 found this helpful

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slim d

jacksonville florida

Overall
Durability
Value
Features
Design
Usability
straight product for price

July 20, 2011

I got 4 of these in my trunk with hfi1000d mono block amp and they were not as hard as I like but they do wonders. It's all how u like ur system to sound.

12 of 15 found this helpful

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Stratus05

Boston. MA

Overall
Durability
Value
Features
Design
Usability
Wow! This is better than I expected!

March 1, 2011

I have one of these with a 300 watt alpine amp and this thing bumps. I don't have it turned up all the way and my mirror shakes, rattles my trunk and people hear me coming. It's great with all types of music and alpine is the best you can get!

12 of 15 found this helpful

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Steve-Dave

Greenville, NC

Overall
Durability
Value
Features
Design
Usability
Fresh Sound

September 17, 2010

I have almost an entire Alpine Set now, iDX-200 Headunit, Type-R Door 2-ways, m-500 sub amp. these make the bass unique and fresh in the box with a few more days on the break-in already getting looks from my neighbors

12 of 15 found this helpful

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hunter

seattle, WA

Overall
Durability
Value
Features
Design
Usability
packs a punch

April 9, 2012

For the price this thing is awesome. I have one in a ported box in my crown vic and it sounds great. Don't expect extreme bass from one of these but it will still hit hard. The speaker grill it comes with is cool too.

10 of 12 found this helpful

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badazz_prelude sh

Jupiter, Florida

Overall
Durability
Value
Features
Design
Usability
very good for the price!

January 11, 2010

i got 2 of these in the trunk of my prelude they r very decent for the price they hit hard and sound very clean. ive have kicker l7s and my friend has 15inch mmats 2.5 p serious now his sub comes nowhere near those in spl or sq so don't expect to buy two of these an amp and head unit and beat down the block. but they are probably the best subs FOR THE PRICE. Only downside is one of mine blew but that was my fault.

11 of 14 found this helpful

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chris

belleville, PA

Overall
Durability
Value
Features
Design
Usability
nice subs

September 9, 2008

just got two of these a little ago and they are very nice for the price they handle more power than described im feeding both of mine 450 watts rms and they have no problem they shake my rearview mirror so bad that you cant see out of it and they also shake my two door mirrors they sound really good also

11 of 14 found this helpful

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Tony

Boston, MA

Overall
Durability
Value
Features
Design
Usability
Great Product!

August 19, 2011

Ok, so my buddy was cleaning out his garage and he had 2 of these laying around. He sold them to me for 30 dollars! So i custom built a double ported box, and put them in my Blazer. And wow. These things SLAM. Defiantly a good buy.

10 of 13 found this helpful

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Double D

Holliday,TX

Overall
Durability
Value
Features
Design
Usability
12" apline

December 22, 2009

I currently have one of these in my single cab f250 with a 300 watt amp and this thing thumps. We hooked a 600 watt amp up to it and it hurt. i might put another one in and a 1000 watt amp.

10 of 13 found this helpful

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wesdawg

plezer sc

Overall
Durability
Value
Features
Design
Usability
this sub pounds !

August 31, 2011

This sub sounds amazing they hit reel hard I have two in a ported box in my s 10 and they sound amazing

9 of 12 found this helpful

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Trae

Summerdale, AL

Overall
Durability
Value
Features
Design
Usability
Anything but cheap!!!

August 30, 2011

I bought these subs for a Honda Prelude but never got around to installing it because I replaced it with the Type X 12, BUT I sold them to a good friend of mine to puy in his car and lemme say... WOW I actually didnt expect them to perform the way the did because of the price, but man was I wrong! He since then has put them in a truck and they are still going strong and sounding phenomenal...after 5 YEARS!!!

This is a great buy and bang for your buck if you dont wana invest a lot as extra batts or HO alts etc., and just looking for a nice, clean sounding system, look no further, Alpine delivers!!

9 of 12 found this helpful

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Ryan

lansing,mi

Overall
Durability
Value
Features
Design
Usability
Best Budget Sub ... ever

December 23, 2010

I got a bassworks 2.2 cubes box .... this one twelve is not only the cleanest bass I have heard ... even over the JL's and Rockfords ... it is also its just as hard in this box .... as my friends to Lanzar Vibe 12"s that are 500w EACH

Match this sub up with a Rockford Fosgate P-500 or Alpine MRP-500 and you'll love it

9 of 12 found this helpful

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Jtizzy

Warwick, RI

Overall
Durability
Value
Features
Design
Usability
All around good sub

June 10, 2009

I have 1 of these in a custom side panel box and this thing just knocks. This one sub is keeping up with my friends two p1's with out a problem and i have my whole trunk. i would tell anyone i know to buy alpine subs now,great deal

7 of 9 found this helpful

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Josh

The Dalles, OR

Overall
Durability
Value
Features
Design
Usability
Alpine Type-E

January 13, 2009

I recommend these to someone who is looking for good yet cheap bass. They weren't too expensive with great sound production. Yet the problem that I kept having was the tinsel leads would separate and I had to warranty them 4 times. If you purchase them I recommend getting the warranty with them too.

8 of 11 found this helpful

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patrick

Bakersfield, CA

Overall
Durability
Value
Features
Design
Usability
great buy

March 4, 2008

per sonly i don't have this model but i did have the old e sub so i can say the old e's in my jeep Cherokee all the way in the back would make more bass than most people want, no it's not the subs you here at the stop light but they are the ones that are going to give you a head ache with the bass turned up, i had 2 with a power acoustic 2200 watt amp and it rattled off my center console in about 1 mile after installing.
more magnet on the new ones = more bass

7 of 9 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

12" Dual Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $69.95

12" Dual Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Vented Enclosure w/ Premium Carpeted Finish

Your Price $89.95

12" Single Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Single Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $43.95

12" Vented Subwoofer Enclosure

CARB Compliant, 3/4" MDF Vented Enclosure Lined with Premium Carpeted Finish

Your Price $65.95

Single 12" Venteded MDF Subwoofer Enclosure

12" Vented 3/4" MDF Enclosure Lined w/ Polyfil.

Your Price $44.99

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $37.85

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 $53.99

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 $64.99

Dynamat Sound Dampening Trunk Kit

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

Your Price $87.63

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

Car Stereo and Speaker Installation Tool Kit

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

Your Price $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

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

Your Price $74.99

12 oz. Can of Adhesive Spray

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

Your Price $8.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $6.99

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

1 Alpine SWE-1243 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine SWE-1243 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Alpine SWE-1243 Subwoofers

4 Channel Amp

4 Alpine SWE-1243 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-1243

UPC

793276620989

Weight

16.00lbs

Internal SKU

swe1243

Internal Product ID

11841

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-1243