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Fit it Yourself?

Everything you need to fit it yourself at home

DIY Kit
Only £30.00 

With Steering Wheel Control
Only £50.00 

Alpine SWR-843D 8 inch (20cm) Type-R Subwoofer Dual 4ohm Voice Coil

£124.99 Save £243.24 (66%)  was:£368.23
5 Stars 5
Quickfind Code - 31215
£124.99
Save £243.24 (66%)
rrp: £368.23
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.

Pioneer TS-SW841D 500W 8" single 4Ω voice coil shallow subwoofer
Pioneer TS-SW841D

Key Features

8 inch (20cm) TypeR Subwoofer Dual 4ohm Voice Coil - Alpine SWR-843D

Extreme bass fits in more places
The Type-R Subs have been completely redesigned to offer more installation flexibility and application versatility to build the ideal sound system. At 115 mm of mounting depth for the 8” (20 cm) this new design offers even greater output capability.
 
More Excursion = More Output
The new FEA-Optomized Motor Structure together with our revolutionary High-Amplitude Multi Roll (HAMR) Suspension Design gives the new Type-R Subwoofers the highest X-max and SPL output in the category. With a real-world, measured 14 mm of X-max, allow the new 8” (20cm) Type-R Subwoofers to deliver the best-in-class bass output, ultra-low distortion, and unparalleled sound quality.
 
More Motor Force = More Control
Starting with a new ten piece, segmented magnet structure, the new Type-R subwoofers deliver more accurate, louder and cleaner bass with even more control. This new magnet assembly is also an integral part of the next generation of Alpine’s Patented Radial Vented VC cooling system.
 
Keep it Cool = Keep it Playing
Alpine’s Patented Radial Vented VC Heatsink and Airflow Management System (US Patent #7,634,101) helps to minimize power compression and ensures reliable long playing time by actively eliminating output-robbing heat away from the Voice Coil. The new one-piece cast aluminum frame with integrated shorting sleeve uses the entire frame as a heatsink, to allow for sustained power output and handling, even in the most extreme of applications.
 
FEA Optimized = Maximum Linearity
Alpine’s Patented Compound Radius Curve pole geometry ensure for an ultra symmetrical magnetic field, while optimizing flux density to greatly reduce distortion, while further improving power handling and output.
 
Improved Power Handling
The oversized 65 mm voice coil offers more than 35% more surface area, allowing for increased power handling to 600W RMS / 1800W Peak. To get the best performance, we recommend you pair Type-R subs with Alpine’s new PDX digital amplifiers.
 
Specifications:
  • RMS Power Handling: 350W
  • Peak Power Handling: 1000W
  • Mounting Depth: 115 mm
  • Mounting Diameter: 176 mm
  • Nominal Impedance: 4 Ohm + 4 Ohm (dual 4-ohm)
  • Frequency Response: 28-200 Hz
  • Sold in individual units 


Download image of Alpine SWR-843D Click here for Image of Alpine SWR-843D
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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:

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