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Alpine SWR-1243D

12" Dual 4 ohm Type-R Series Car Subwoofer

Discontinued
|

Good news and a little bad...

This item has been discontinued

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

swr12d4 thumbnail

Alpine SWR-12D4

OUR PRICE: $159.95

View item

New and Improved Alpine Type-R:

Delivering the best bass output, the Alpine SWR-1243D has been redesigned to enhance audio playback and become your ideal sound system. Type-R's new depth design offers a 20% reduction while adding the new and improved magnet structure. With this updated double-stacked strontium magnet, this product gains over 20% more motor force to provide a louder, cleaner bass. The optimized CRC machined motor creates an even magnetic field to provide the user with less distortion and overall improves the subwoofers power handling. This subwoofer features a High-Amplitude Multi Roll (HAMR) to provide excellent excursion with overall better output. Having a new and improved airflow management system controlling the temperature of the voice coils, the air is redirected across the heatsink to avoid overheating. With heavy playing time, this heatsink feature minimizes the amount of compression to reduce any heat damage to the voice coils giving you a long-lasting subwoofer.

  • 12" Dual 4 ohm Type R Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 300-600 watts
  • Kevlar reinforced pulp cone woofer
  • 2-Piece Structural Parabolic diaphragm design
  • Injection molded Santoprene rubber surround
  • Alpine exclusive High Amplitude Multi-Roll (H.A.M.R) surround for impressive excursion and clean, accurate bass
  • FEA Optimized progressive NOMEX spider
  • Radial vented VC head sink
  • Concealed mount gasket system
  • Reinforced layer spider integration tinsel leads
  • Oversized 2-1/2" Voice coil
  • 4-Layer dual voice coil design
  • Voice coil made from 180°C high temperature wire on spiral cut aluminum former
  • Single-piece cast aluminum frame with Alpine Patent Pending Airflow Management System for efficient cooling
  • Airflow Management system controls the temperature of the voice coil by directing the air across the heatsink
  • One sided push terminals make installation and wiring fast and simple
  • Each terminal accepts up to 8 AWG wire for high power signal transfer
  • Concealed gasket mounting system hides the screw holes and makes for a clean install
  • Integrated grill technology allows for a seamless installation of a grill
  • US Patented Compound Radius Curve (CRC) design with integrated short sleeve configuration
  • CRC Machined motor structure creates a symmetrical magnetic field for less distortion and improves power handling
  • High-power, double-stacked strontium magnet structure
  • Newly redesigned for a 20% depth reduction
  • Frequency response: 24-200 Hz
  • Sensitivity: 83 dB
  • 1-year Sonic Electronix 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 SWR-12D4 thumbnail
(newest, current model)
Alpine SWR-1243D thumbnail
(previous model, replaced by Alpine SWR-12D4)
Alpine SWR-1242D thumbnail
(previous model, replaced by Alpine SWR-1243D)
Alpine SWR-1241D thumbnail
(previous model, replaced by Alpine SWR-1242D)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Type-R (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.
1800 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.
600 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.
Dual
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
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).
24 - 200 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".
85 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.
20 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.
Dark Gray
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 Fiber
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
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.
Optional (Accessory required and sold separately)
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.
0.65 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.
1.25 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.
1.0 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.
2.0 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.
6-3/8"
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.
10-13/16"
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

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
86%
4 Star
13%
3 Star
0%
2 Star
1%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.8
Features
4.8
Design
4.8
Usability
4.9

Andrew

Canada

Overall
Durability
Value
Features
Design
Usability

Amazing Subs for the price

August 3, 2010

I had a hard time deciding if I should have gotten 2 or just 1. I ended up only getting 1 Alpine Type-R sub and this thing blasts! I'm running it off the Rockford R500 amp and it's perfect. So happy with my purchase.

4 of 4 found this helpful

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Mocape

Great Britain

Overall
Durability
Value
Features
Design
Usability

Bass in the place London!!

January 3, 2012

Don't bother looking anywhere else. Just click and buy. This sub is mental, an it keeps on going and going, giving birth to hard, deep and tight Bass! Im only running 400w rms on it in a sealed enclosure and my neighbors hate me. Can't wait for summer time in London! If you want to be that guy cruising with loud bass, then this is your tool to make it happen. WE LOVE BASS!

2 of 2 found this helpful

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Aztekk

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability

High output, Good sound quality

April 15, 2011

I wanted a sub with high output and good SQ at a low price, after doing a lot of research, I decided on this woofer. I tossed it into a 1 cubic foot sized sealed box as recommended by Alpine for SQ (I mainly listen to rock music). I juiced it with an RF bdCP 1000, 900 watts at 4ohm. I used to own 2 RF 12's powered by the first model Bd1000. This single 12 hits at least 70% as hard and has better sound quality. I bought one more of these, and I'm thinking of sending it back, a single one is so loud. ( I will probably keep the extra one and hook it up) I havent tried wiring this sub at 2ohms (My amp gives 1500 Watts at 2ohms) But I would imagine it would probably sound even better. This sub sounds good for rock and rap, but for some reason, it makes techno and dance music sound great. It feels just as bulletproof as it looks in the pictures.

2 of 2 found this helpful

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demetrius

Key West, FL

Overall
Durability
Value
Features
Design
Usability

Awesome

July 5, 2010

I love these subs. I installed these and ran each one off its own amp. I'm only giving each one 500w but these things bang.

2 of 2 found this helpful

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Terry

woodruff, SC

Overall
Durability
Value
Features
Design
Usability

Awesome subs

June 3, 2010

Put them in this afternoon and they bang hard

2 of 2 found this helpful

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Matt

Cleveland, OH

Overall
Durability
Value
Features
Design
Usability

Good sub

June 27, 2012

Just installed one with an mrp-m500 and it hits good. Bought some more for me and accidentally spilled some epoxy on it. When getting the epoxy off, it peeled some of the cone with it which is when I noticed that the cone is not really "kevlar" but pressed paper with a metallic paint coat on top. Other than that, its a great sub...just wish alpine didn't twist the truth

0 of 0 found this helpful

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Jake

Show low, Az

Overall
Durability
Value
Features
Design
Usability

Good all around sub

June 27, 2012

I really like this product. It is loud and pretty crisp and I only have it on a 500 watt memphis amp. It does smoke a little when I turn it up but im pretty sure thats my very old amp, and not the sub at all. I didnt like how the bannana clips for bridging the voicecoils felt so I just used speakerwire. They were just very loose. I listen to hip hop, punk, rap, dubstep and it compliments them all very well. Oh and if youve never listened to dubstep on subs then dont hate on it just yet. Its totally different. It is really about the bass you just dont get on headphones. Lol

0 of 0 found this helpful

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Jason

Tampa, FL

Overall
Durability
Value
Features
Design
Usability

Loud Sub

June 20, 2012

I listen to one of these all the time in my friend's car. It slams! He pushes it past the rms too often but this subwoofer handles it well. I have seen this sub pushed obviously past it's limits for a couple minutes straight and it is DURABLE! Luckily, it just wont blow. The sound quality isn't there. I have W3's and they are noticeably cleaner. If you put this in the right size ported box, it is well worth the money.

0 of 0 found this helpful

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Steve

Tewksbury, MA

Overall
Durability
Value
Features
Design
Usability

Amazing Subwoofer

May 24, 2012

Previously, I had a 15" Kicker Comp, and I loved it but it was too big and took up too much trunk space, so this time around I wanted something smaller and louder. I got it! This is a great sub woofer and will not disappoint, I couldn't be more pleased.

0 of 0 found this helpful

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johnny

birmingham, AL

Overall
Durability
Value
Features
Design
Usability

Alpine Type R

May 15, 2012

If you want loud get these. They dont change notes very well between high and low hits but they are still loud. If your lokking for everyone around to hear you get these. Two of these in a ported box is all the bass you would ever need.

0 of 0 found this helpful

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tcullen1

Independence, MO

Overall
Durability
Value
Features
Design
Usability

Insane Bass

April 24, 2012

I have one in a 2009 Ford Escape for my wife. It's running off a pr2.100 Memphis 2 channel bridged at 300 rms. This sub is by far not getting enough wattage but the sound and clarity is superior than 2 PR Memphis 12's. This one sub is plenty for her car and I recommend this for all. This sub is well worth 200.00 range easily. I fiberglassed a box with 1.9 cu internal vented tuned at 32hz. This is a 5 star sub.

0 of 0 found this helpful

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Travis

Fuquay Varina, NC

Overall
Durability
Value
Features
Design
Usability

Make sure you get a box designed to spec!

April 15, 2012

I had one alpine type r in a walmart box and was very disappointed. So I decided to get a second one and put them in a ported box designed to spec. WOW what a difference. I was bumping so hard my rear view mirror fell off! I would definitely recommend this sub just make sure you buy a ported box from sonic instead of settling for a walmart box!!

0 of 0 found this helpful

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Matthew

Spicer, MN

Overall
Durability
Value
Features
Design
Usability

You wont be disappointed

April 14, 2012

Have had mine for at least 3 months or so. I have an 1100 watt peak 550 rms amp hooked up to this and I am not gentle with it. Just one 12 in a custom ported box and this blows away my friends two kicker CVRs. Definitely worth spending the extra buck to get these. You wont be disappointed.

0 of 0 found this helpful

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Grant

Ohio

Overall
Durability
Value
Features
Design
Usability

Hard hittin

April 9, 2012

Bought this along with an RF Prime R500.1 (528RMS). At first I had this in a sealed box and I was happy. Then I got a ported 1.8 cu ft box and this thing hits so dang hard. When the back seats are down it shakes my winshield and side mirrors like crazy. So many people ask what I have in back and they are amazed when I tell em its only 1 12". This thing out does 2 kickers easily. Almost nothing can compete with this sub in its range. The only thing that you have to watch on this sub is the low lows. After playin rack city at max volume they started to smell a bit. For all other Hz this thing is a beast.

0 of 0 found this helpful

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Max

Fond du Lac, WI

Overall
Durability
Value
Features
Design
Usability

Great subs!

March 17, 2012

These subs are a great deal. They are built with amazing quality and they are cheaper than almost any sub in it's class. I have two of these with a Hifonics HFI2000d amp and they pound. Make sure you give them enough power though, otherwise they won't play at all.

0 of 0 found this helpful

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Basshead

Canada

Overall
Durability
Value
Features
Design
Usability

Danm

March 15, 2012

I am running 4 of these puppies in my ford with about 7000 watts. These subs are drop dead sexy with HQ bass. If you want bass that will shake the crap out of your can + 4 blocks away these are the cheapest subs to do so. BTW you dont need to let these subs warm up in the winter, even tho its still a good idea.

0 of 0 found this helpful

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reza

sterling, VA

Overall
Durability
Value
Features
Design
Usability

buy it definitely

March 13, 2012

Value is great. Quality is amazing. I am looking forward to buying another one.

0 of 0 found this helpful

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Coleman

Canada

Overall
Durability
Value
Features
Design
Usability

Excellent product

March 4, 2012

I have this sub in a sealed box in my truck running at full power and it sounds very good. It doesn't distort at all and the bass hits very hard without any distortion. Highly recommended, I'm very happy with it.

0 of 0 found this helpful

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nick

hampden, MA

Overall
Durability
Value
Features
Design
Usability

great sub, good deep bass

February 23, 2012

Pros: deep bass, can be loud or soft and sound good, box doesnt matter, sounds good in sealed or ported, only need 500 watts to get it pounding. Cons: will blow easily if you try to run it close to max watts (stick with rms), doesnt have the high notes that other subs do (this is more of a rap sub than a rock one).

0 of 0 found this helpful

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Adam

waterloo, IA

Overall
Durability
Value
Features
Design
Usability

Alpine 4eva

February 19, 2012

I have 2 12s wired down to 1ohm and I almost forgot what these sounded like! I owned 4 ran off 2 1500.1 kicker amps a couple years ago and they were dual 2 ohm wired to 1. Dual 4 put out the same head pounding bass, extreme lows with little or no distortion at high volumes. RE 1500.1 bridged are runnin mine. XS 1200v cell with .5 farad cap and yellow top optima for SERIOUS power. Sealed enclosure for my 97 continental.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 12" Sealed MDF Subwoofer Enclosure

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

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

Your Price $59.99

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 $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 $3.99

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

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

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

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Alpine SWR-1243D Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine SWR-1243D Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Alpine SWR-1243D Subwoofers

Mono Amp

4 Channel Amp

4 Alpine SWR-1243D Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

SWR-1243D

UPC

793276601537

Weight

27.00lbs

Internal SKU

swr1243d

Internal Product ID

24187

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 SWR-1243D