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Alpine SWR-8D2

Type-R 8" subwoofer with dual 2-ohm voice coils

Item # 500SWR8D2

Alpine's Type-R subwoofers will bring big bass to just about any vehicle.

Alpine's Type-R subwoofers will bring big bass to just about any vehicle.

California customers:
Please click here for your Proposition 65 warning.

Item # 500SWR8D2

Low stock

$159.95 Sale: -$31.99 off

$127.96 each

About the Alpine SWR-8D2

Maximum bass output

Alpine's Type-R subwoofers will bring big bass to just about any vehicle. The SWR-8D2 8" sub features a cone made from Kevlar® treated pulp — the same material used to make bulletproof vests — and its durable HAMR Santoprene™ surround allows for huge amounts of excursion. This sub was built for bassheads that want the best of both worlds: accurate response and otherworldly thump.

Maximum bass output

Alpine Authorized Online Dealer

Alpine's Type-R subwoofers will bring big bass to just about any vehicle. The SWR-8D2 8" sub features a cone made from Kevlar® treated pulp — the same material used to make bulletproof vests — and its durable HAMR Santoprene™ surround allows for huge amounts of excursion. This sub was built for bassheads that want the best of both worlds: accurate response and otherworldly thump.

Side view of SWR-8D2 subwoofer

Bring on the power

The SWR-8D2 can handle up to 350 watts RMS, so be sure to choose a suitable amplifier as these subs definitely want lots of juice. Its dual oversized 2-ohm voice coils offer the wiring flexibility you'll appreciate as your system changes and grows, ensuring that you can always pull maximum power from your amp. It works well in sealed and ported enclosures so you can choose what kind of bass you want to hear and feel.

Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible.

READ LESS

Product highlights:

  • 8" subwoofer with dual 2-ohm voice coils
  • Kevlar reinforced pulp cone with HAMR Santoprene rubber surround
  • frequency response: 30-200 Hz
  • power handling: 150-350 watts RMS (175 watts per coil)
  • peak power: 1,000 watts
  • sensitivity: 83.5 dB
  • top-mount depth: 4-1/2"
  • sealed box volume: 0.15-0.50 cu. ft.
  • ported box volume: 0.25-0.70 cu. ft.
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # SWR-8D2

What's in the box:

  • One 8" Dual 2-ohm voice coil subwoofer
  • 1 Rubber concealing ring (installed)
  • Two 4.5" jumper cables (each cable has a single banana connector on each end)
  • Type-R Subwoofer application guide (English/ French)
  • On-line product registration information (English/ French/ Spanish)
  • Warranty information (English/ French)
  • Important Notice (English /French)

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More details on the Alpine SWR-8D2

Pat M.

Product Research

Features
Enclosure Compatibility

Features

Kevlar Reinforced Pulp Cone: This Alpine Type-R subwoofer has a two-piece structural parabolic Kevlar reinforced pulp cone. Kevlar adds strength and tear resistance to the woofer cone while maintaining the benefits of a pulp cone design. There is also an oversized inverted poly-mica dust cap, which increases rigidity and virtually eliminates cone distortion at extreme volume levels.

HAMRS: The woofer features a High Amplitude Multi Roll Surround (HAMRS), made of Santoprene, that allows a large linear excursion and greater SPL. The HAMRS design allows extreme excursions without sacrificing valuable cone area.

Progressive Spider: The progressive Conex spider has reinforced layer tinsel leads to ensure reliable and consistent control of the tinsel leads and eliminate any mechanical noise or interference often seen in high excursion cone designs.

Compound Radius Curve Pole Geometry: Alpine's Patented Compound Radius Curve pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output.

Oversized Voice Coil: The oversized (40mm), high-temperature, 4-layer dual voice coils offer increased power handling to 350W RMS / 1000W Peak.

Dual Voice Coils: For system flexibility, the woofer has two 2-ohm voice coils. When the voice coils are wired in parallel, the woofer presents a 1-ohm load. When the voice coils are wired in series, the woofer presents a 4-ohm load.

Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept bare wire up to 8 gauge, pin connectors, or single banana plugs.

Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 1-ohm load) or series (for a 4-ohm load).

Enclosure Compatibility

Sealed Box Volume: The recommended sealed box volume ranges from 0.2 cubic feet to 0.55 cubic feet, with 0.3 cubic feet being the ideal size.

Ported Box Volume: The recommended ported box volume ranges from 0.3 cubic feet to 0.75 cubic feet. The ideal size is 0.7 cubic feet, using a slot port measuring 7" (W) x 3/4" (H) x 15-1/2" (L).

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Customer Q&A

3 questions already asked

Q
Will this speaker fit 2020 Civic si rear center subwoofer opening? Also, will Civic Si OEM 400Watt system capable handle this subwoofer replacement?
[ Rayho  Feb 23, 2020 ]
1 answer
A
I don't know about the opening on your Civic. You could take the sub out that you are replacing and take measurements so you will know for sure. I have the sub in a sealed box I made. 12" x 12" x 6.5" used 5/8"birch plywood. Took material out of stuffed animal filled box and the bass is unbelievable for a 8" sub. This sub and your system should work great together. I can turn the gain up or down and get good result out of sub. Hope this helps? Any question? Just ask. Charlie,
[ charles  Feb 24, 2020 ]
Q
Will this sub fit as a replacement for the 8" stock door subs on 05-09 Mustangs with the Shaker 500 system?
[ Joshua  May 26, 2018 ]
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Jun 01, 2018 ]  Staff
Q
I will be buying two of these to go into a ported custom fiberglass enclosure. I just don't know what amplifier to match them with? The only two I will consider. a. MRX-M110 b. MRX-M550 Thanks in advance.
[ Cesar  Dec 07, 2013 ]
1 answer
A
For a recommendation on the best amplifier to match with your subwoofers please contact an Advisor by phone or chat. They'll be able to check on the specs of the subs and the amplifiers, to make sure that you'll get the most out of your new gear.
[ Jeff  Dec 09, 2013 ]  Staff

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