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Alpine SWR-1243D

12" Dual 4 ohm Type-R Series Car Subwoofer

4.8

(72 reviews)

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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)
Subwoofer Specifications
Subwoofer SeriesType-R
Subwoofer Size12"
Peak Power Handling1800 watts
RMS Power Handling600 watts
Voice Coil(s)Dual
Impedance (Per Voice Coil)4 ohms
Frequency Response24 - 200 Hz
Sensitivity85 dB
Xmax (millimeters)20 mm
Subwoofer DesignRound / Circle
Main Cone ColorDark Gray
Woofer CompositionKevlar Fiber
Woofer SurroundSantoprene Rubber
Subwoofer GrilleOptional (Accessory required and sold separately)
Re-Cone Kit AvailableNo
Recommended Enclosure Specifications
Recommended Enclosure TypePorted / Vented
Sealed
Minimum Sealed Box Volume0.65 cubic feet
Maximum Sealed Box Volume1.25 cubic feet
Minimum Ported Box Volume1.0 cubic feet
Maximum Ported Box Volume2.0 cubic feet
Top-Mount Depth6-3/8"
Cutout Diameter10-13/16"
Shallow Mount InstallationNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Alpine SWR-1243D
Average Customer Rating is 4.8 out of 5 stars:
4.8
based on 72 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
86%
4 star:
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.
13%
3 star:
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0%
2 star:
.
1%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.8
Features
4.8
Design
4.8
Usability
4.9
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
August 3, 2010 Amazing Subs for the price
2 of 2 people found the following review helpful:
Review by
Andrew from Stittsville, ON, Canada
Overall
Durability
Value
Features
Design
Usability
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.
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January 3, 2012 Bass in the place London!!
1 of 1 people found the following review helpful:
Review by
Mocape from London, Great Britain
Overall
Durability
Value
Features
Design
Usability
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!
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April 15, 2011 High output, Good sound quality
1 of 1 people found the following review helpful:
Review by
Aztekk from Tucson, AZ
Overall
Durability
Value
Features
Design
Usability
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.
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July 5, 2010 Awesome
1 of 1 people found the following review helpful:
Review by
demetrius from Key West, FL
Overall
Durability
Value
Features
Design
Usability
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.
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June 3, 2010 Awesome subs
1 of 1 people found the following review helpful:
Review by
Terry from woodruff, SC
Overall
Durability
Value
Features
Design
Usability
Put them in this afternoon and they bang hard
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View All 72 Reviews for Alpine SWR-1243D
Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
 ProductPriceAdd?
Sealed Subwoofer EnclosureSealed Subwoofer Enclosure
Single sealed 12" hatchback enclosure made from 3/4" MDF construction and covered in gray carpet.
$19.99
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
 ProductPriceAdd?
12" Universal Subwoofer Grille12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$9.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
 ProductPriceAdd?
24.6 ft. of 10 AWG Monster Cable 400 Series Speaker Wire24.6 ft. of 10 AWG Monster Cable 400 Series Speaker Wire
For the ultimate connection, Monster uses a MultiTwist™ construction, a Magnetic Flux Tube, and even more cutting edge wire technology.
$50.00
15 ft. of 12 AWG StreetWires Speaker Wire15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$19.99
20 ft. of 12 AWG Kicker Speaker Wire20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$24.49
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk PackDynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$159.99
Bass Reconstruction Processors
These sound processors are perfect for enhancing the lower frequencies of a car audio system. After some installation and tuning, your new system will sound better than ever!
 ProductPriceAdd?
The Epicenter by AudioControl (Gray)The Epicenter by AudioControl (Gray)
The original bass booster expander with included remote will enhance the bass of your new system.
$149.99
Maxxsonics MX-3Maxxsonics MX-3
Enhances the bass response, increases linearity, buffers unwanted noise, and improves the frequency range of your subwoofer.
$64.95
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
 ProductPriceAdd?
20 oz. Bag of Poly-Fil20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$5.99
Spring Post Terminal CupSpring Post Terminal Cup
Makes adding a spring post terminal to an enclosure simple! Banana clip ready!
$2.99
Binding Post Terminal CupBinding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$2.99
Banana Clip TerminalsBanana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Alpine SWR-1243DAlpine SWR-1243D$169.95
Related products
1800W Alpine Subwoofer + Jensen Amplifier Bass Bundle
Sonic Electronix Exclusive Bass Bundle Combo Package • Alpine SWR-1243D 12" Type R Subwoofer + Jensen Power 900.1 Monoblock Amplifier + db Link 4 Gauge Amp Kit
1800W Alpine  + Crossfire Bass Bundle
12" Dual 4 ohm Type R Subwoofer • 1800W Max • 300-600W RMS • BMF Series Monoblock Class A/B Car Amplifier • MOSFET Power Supply • Variable Bass Boost • Variable Low-Pass Filter • Military Spec. Audiophile Grade Components

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: Alpine
Model number: SWR-1243D
Product manual: Download the Alpine SWR-1243D Product Manual
UPC: 793276601537
Weight: 27.00 lbs
Internal SKU: swr1243d
Internal product ID: 24187

Price Information

$219.99

–$50.04

$169.95

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Customer Testimonial

I was very pleased with this company, my ordering processes very easy and quick, and talk about quick I received my order alot faster than I expected and the product works perfect. I definitely will be ordering from Sonic Electonix again and hope you all will to.

- Mary from South San Francisco, CA

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