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Fit it Yourself?

Everything you need to fit it yourself at home

Only £30.00 

With Steering Wheel Control
Only £50.00 

5 Stars (1)
 Alpine SWR-1243D

Alpine SWR-1243D 12" 1800 Watts peak power dual 4ohm voice coil subwoofer

£124.99 Save £65.00 (34%)  was:£189.99
5 Stars
1 Review(s) / write a review
Quickfind Code - 27100
Save £65.00 (34%)
rrp: £189.99
This product has been discontinued

  • Free Car Air Freshener with every order Free Car Air Freshener with every order
  • Next Day Delivery available on all order before 5pm Next Day Delivery available on all order before 5pm
  • Easy Returns Easy Returns
  • 1 Year Easy Warranty 1 Year Easy Warranty

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Sorry, this product has been discountinued. We recommend the following product.

Alpine SWR-12D4 3000W 12" dual 4Ω voice coil subwoofer
Alpine SWR-12D4

Key Features

12" 1800 Watts peak power dual 4ohm voice coil subwoofer - Alpine SWR-1243D

Bass production is all about moving air and Alpine's Type-R subs do that better than ever. Advanced suspension features give these power houses the extra-long cone excursion needed to push large amounts of air, while the two-piece parabolic Kevlar® treated pulp woofer cone and multi-roll Santoprene™ rubber surround promote accurate response. Best of all, these subs feature shallower mounting depths than previous Type-R subs, so you can fit them into more spaces in your vehicle.

Impressive power handling

The SWR-1243D 12' subwoofer handles up to 600 watts RMS for big-time output, and its dual oversized 2-ohm voice coils offer system wiring flexibility. It works well in sealed or ported enclosures so you can choose what kind of bass you want to hear and feel. The one-piece aluminum frame houses a double-stacked ferrite magnet structure for increased accuracy and power handling, along with a finned, radial heatsink that shunts off excess heat for long-lasting reliability with reduced distortion.

Alpine SWR-1243D Features:

  • 12' component subwoofer
  • Kevlar-reinforced pulp cone
  • Cast aluminum frame with perimeter venting
  • Santoprene Rubber Surround Material
  • Dual 4-ohm voice coils (can be wired into 2 or 8-ohms)
  • Frequency response: 23-400 Hz
  • Power Range: 600 - 1800 Watts
  • RMS Power Handling: 600 Watts
  • Peak Power Handling: 1800 Watts
  • Sensitivity: 83 dB
  • Mounting Depth: 162mm (6-3/8')
  • Mounting Diameter: 275mm (10-13/16')
  • Computer Optimised Magnetic Circuit
  • CAS Technology

Download image of Alpine SWR-1243D Click here for Image of Alpine SWR-1243D
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Customer reviews

kyle on 17/04/2012 5 star rating

really impressed with this sub. much better than my old fusion sub. cleaner and louder bass.

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Fitting Services

Need help with Installation?

Here at CarAudioCentre we offer a professional and reputable fitting service in all our stores. For all fitting enquiries and bookings please visit or call one of our nationwide stores. Our fitters can install your new car stereo, DAB radio, audio visual, speakers, subwoofers or amplifier. We can also help to connect your iPod or MP3 player to you existing audio unit and can offer the best advice on the right in-car entertainment for your vehicle, to further this more we also offer a total 100% custom installation service for demo and show vehicles. So if you have an idea come on in and run it past us, the possibilities are endless and we are never too busy for an enthusiastic chat about our favourite subject.

Please note:

"That our two year warranty on products is only applicable to purchases made directly from us and that have been fitted in one of our stores."

Our Stores:

542 546 Mansfield Road, Sherwood NG5 2FR
Tel: 0115 9624 986
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181