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Alpine SWR-12D4

Type-R 12" subwoofer with dual 4-ohm voice coils

29 Reviews | 9 questions - 14 answers

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Item # 500SWR12D4

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Overview

Our take on the Alpine SWR-12D4

Alpine's Type-R subwoofers will bring big bass to just about any vehicle. The SWR-12D4 12" 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-12D4 12" 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-12D4 subwoofer

Bring on the power

The SWR-12D4 can handle an astounding 1000 watts of RMS power, so be sure to choose a suitable amplifier as these bass monsters definitely want lots of power. Its dual oversized 4-ohm voice coils offer the wiring flexibility you'll appreciate as your system changes and grows, so 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.

Need an amp for this sub? Check out this Crutchfield-approved bass package.

To drive this single subwoofer, we recommend a mono amplifier rated between 750 and 1500 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

If you want a loud bass that will wake up your neighborhood I highly recommend this bad boy right here will get the job done. I'm definitely getting another one again when I get paid haha

Gras, Wahiawa, HI

Featured Video:

What's in the Box:

  • One 12" Dual 4-ohm voice coil subwoofer
  • 1 Rubber concealing ring (installed)
  • Two 3" jumper cables (each 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)

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

Product Highlights:

  • 12" subwoofer with dual 4-ohm voice coils
  • Kevlar reinforced pulp cone with HAMRS Santoprene rubber surround
  • frequency response: 24-200 Hz
  • power handling: 300-1,000 watts RMS (500 watts per coil)
  • peak power: 3,000 watts
  • sensitivity: 84.9 dB
  • top-mount depth: 6-3/8"
  • sealed box volume: 0.75-1.00 cu. ft.
  • ported box volume: 1.25-1.50 cu. ft.
  • warranty: 1 year
  • Our 60-day money-back guarantee
Reviews

Alpine SWR-12D4 Reviews

Average Customer Review(s):

(29 Reviews)
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Hands-on research

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 (65mm), high-temperature, 4-layer dual voice coils offer increased power handling to 1000W RMS / 3000W Peak.

Dual Voice Coils: For system flexibility, the woofer has two 4-ohm voice coils. When the voice coils are wired in parallel, the woofer presents a 2-ohm load. When the voice coils are wired in series, the woofer presents an 8-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 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 2-ohm load) or series (for an 8-ohm load).

Enclosure Compatibility

Sealed Box Volume: The recommended sealed box volume ranges from 0.65 cubic feet to 1.1 cubic feet, with 0.85 cubic feet being the ideal size.

Ported Box Volume: The recommended ported box volume ranges from 1.1 cubic feet to 1.6 cubic feet. The ideal size is 1.48 cubic feet, using a slot port measuring 12-1/2" (W) x 1" (H) x 19" (L).

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

they sound amazing in my Pontiac bonnieville [ Jermaine  Aug 31, 2016 ]
Quality [ JASON  May 25, 2016 ]
Proven speaker [ Mark K.  Mar 09, 2016 ]
i was thinking about buying the red label kicker 12s but then i did a little more research about 12 inch subs. i looked up this product and i quickly learned that buy the reviews this was hands down what i wanted. people spoke highly of the deep bass and thats exactly what i want out of a sub. i also paired it with the alpine 1100 watt amp just to stay within the brand because i also learned this is a good way to get the most out of your subs. [ donta  Mar 07, 2016 ]

9 questions already asked

I would say absolutly NO they won't fit that box. This sub is pretty deep. However it is the best sub you will ever buy. I custom built a upward firing box. [ DANIEL  Jun 07, 2017 ]
Which box are you referring to? Alpine suggests 14x14x11 for a sealed box or 23x12.5x14 for a ported box. [ DALTON  Jun 06, 2017 ]
Thanks for your question. For information on selecting the best amp/sub combo I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system. [ Kenny  Apr 29, 2017 ]  Staff
Alpine recommends using a slot port measuring 12-1/2" (W) x 1" (H) x 19" (L) for their 12" Type R dual 4-ohm subwoofer. I hope that helps. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=159 [ Larry  Mar 08, 2016 ]  Staff
I think ported enclosure sound the best. Follow the enclosure sizing guide that comes with the subs [ Brandon  Mar 23, 2015 ]
Sealed: better sound, smaller sized box Ported: a little more SPL, box is bigger I prefer Sealed, have mine in a 1,1 cu box [ Brian  Mar 23, 2015 ]
I have no idea they usually give it you in the box. [ Carlos  Mar 19, 2015 ]
To be honest I am not sure exactly which part it is that you are looking for. Could you possibly clarify? Otherwise you can call Alpine customer support, you can find their number on the sub box or you can go online to get the number. I have called them several times in the past and they are very knowledgeable and helpful and they will get you what you need or tell you how to get it. I hope this helps you out, and good luck! [ Kevin  Mar 18, 2015 ]
Oops.. I meant to ask this question on the mrx-m110 [ M  Mar 17, 2015 ]
I would not use it in a smaller enclosure my brother had his in a smaller box under his truck seat and it didn't have half of the sound that mine had. This is a great speaker with a lot of boom but needs a good amount of space to sound good. It is in the specs. If you look on the page I forget the exact dementions but I would go with what it says [ TRAVIS  Nov 12, 2014 ]
It depends on which thunderform you are going with. You need to check the depth the box provides for the sub compared to the actual sub depth. Airspace is another factor you should be considering. You should find out the enclosures airspace, and then find a sub with similar requirements. This will guarantee a quality sound, as well as ensuring a long lifespan for the sub. [ ALLEN  Nov 12, 2014 ]
This sub works great with a ported box. It calls for 1.5 cubic feet of space, but my box has 1.83 and it shakes the car nice. Great sub for its value/cost. I definitely recommend it! [ DYLAN ALEC  Nov 11, 2014 ]
No it's 1000 watts rms and 3000 watts peak power [ BEN  Sep 01, 2014 ]
Thanks for your question. For an amp recommendation I would recommend reaching out to an Advisor by phone or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget. [ Jeff  Dec 29, 2013 ]  Staff
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