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Alpine SWR-12D2

Type-R 12" subwoofer with dual 2-ohm voice coils

30 Reviews | 13 questions - 25 answers

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Overview

Our take on the Alpine SWR-12D2

Alpine's Type-R subwoofers will bring big bass to just about any vehicle. The SWR-12D2 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-12D2 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-12D2 subwoofer

Bring on the power

The SWR-12D2 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 2-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.

To drive this single subwoofer, we recommend a mono amplifier rated between 750 and 1500 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Great speakers!!!

Anonymous, Tucson, AZ

Featured Video:

What's in the Box:

  • One 12" Dual 2-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)

Product Highlights:

  • 12" subwoofer with dual 2-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: 84.7 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-12D2 Reviews

Average Customer Review(s):

(30 Reviews)
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Details

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 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 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 0.65 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?

A lot of good reviews [ Billyjoe  Jun 22, 2017 ]
It has the best bass you can get. [ Danny  May 03, 2017 ]
Slams! Gave it 1000rms daily no sweat [ Maximilien  Mar 03, 2017 ]
They had good reviews, I upgraded to 12" subs from 10" subs, I have always liked 12's and Alpine did not let me down. [ Benjamin  Sep 22, 2016 ]
The reputation of these subs and because their user manual supplies more of the needed T/S parameters unlike some other brands. [ Mark  Jul 07, 2016 ]
Great quality [ Michael  Jun 01, 2016 ]
Proven quality speaker [ Mark K.  Mar 09, 2016 ]

13 questions already asked

No it does not include those but I found it better to play around with the size for better sounding subs for your car size [ MARTIN J  Jun 06, 2017 ]
You should be fine. I have ran mine on dual channels but never for extended time. I run my d2s at about 1700 with a mono block and have had no issues for 6 months on my daily. I recommend buying an amp better suited for the job though or you'll never see the full potential of these awesome subs. [ joshua  May 29, 2017 ]
I'm running roughly 900+ watts @ 2 ohms to just one of the two alpine 12d2s I purchased and it sounds excellent. However you're running roughly 200 watts less than the recommended 1000 watts rms. So you may have slight distortion. Stick to the 75-150 percent rule and you'll be fine. [ Roger  May 26, 2017 ]
It's best to wire it so that it's at 2 ohms. Google how to do it or find a person who knows what there doing. I know that you need to wire the sub so it works well with the amp. They need to both run at 2 ohms [ Lukas  Apr 24, 2017 ]
Just use one side of the alpine subs terminals. since it is dual voice coil. Just pick a side [ Fast  Apr 21, 2017 ]
Thanks for your question. For information on selecting the best amp for your subs 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 between the amp models and help you make the best choice for your system. [ Krissy  May 16, 2016 ]  Staff
Thanks for your question. This is for one 12" Dual 2-ohm voice coil subwoofer. Hope that helps. [ Kenny  Apr 11, 2016 ]  Staff
I'd highly recommend keeping it low for around 50-60 hours of playing time to let the subs break in. The difference between out of the box and broken in for me was extremely noticeable. How many amps is your amp rated for? [ Taylor  Nov 17, 2015 ]
The dvc should be in series, and then the subs in parallel in order to get a proper 2ohm load on the amp. Double check the wiring to make sure it's the correct set up. There's diagrams on crutchfield's website. Those subs can handle way more than what that amp can produce. Make sure you don't have any bass boosters enabled on you head unit. They can overload your amp input and distort output. Keep the gain/bass knobs on minimum setting. You can set the freq knobs to your liking. Increase the volume on your head unit until your main speakers are loudest without being distorted and turn it down one or two notches. Now do the same with your gain knob on the amp. And then bass eq. [ willie  Nov 17, 2015 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Krissy  Nov 17, 2015 ]  Staff
since you're looking at the dual 2ohm voice coils you can only run that @ 4ohms with that amp otherwise you'll blow the sub if you attempt a 1ohm connection. i recommend getting the SWR-12D4 and running it at 2ohm giving it 800W [ GERALD  Jul 10, 2015 ]
Sure will. Wire the voice coils in parallel and you'll get the 1ohm from the amp. I'm sure the sub can handle the 1200W, but of course they're only rated for 1000. [ willie  Jul 06, 2015 ]
The best way to get your answer is to call Crutchfield Technicians. I really don't know what a r1000-1d is, so check with Technical Support. [ David  Apr 07, 2015 ]
Yes this should work Because u want to keep 2 ohm stable so u may need more power [ Cory  Apr 07, 2015 ]
i have that exact amp and blew that exact sub twice with it at 1ohm. DO NOT attempt 1ohm connetion on the 12D2 with more than about 400W max rms. i now have the SWS 12D4 and running 500W from that same pioneer amp @ 2ohms in a single sealed box in the back of a 92 oldsmobile. it shakes the car. virtually no problems [ GERALD  Jul 10, 2015 ]
It says 3000 watt peak so you should be fine, I have mine in a ported box at 1200 watts, you can't tell its only one speaker , very loud. [ DeAnn  Mar 17, 2015 ]
U can run it but u would be under powering it so u should get the sub and douwn the road upgrade to a bigger amp [ Chris  Mar 11, 2015 ]
Yes, you can the sub can handle that, no problem. I was running a 1200 Rms dc amp and pushed really well. Just make sure that you break in your sub properly before cranking it up, it took me about 2 weeks at half power to make sure the coils set properly [ Frankie  Mar 10, 2015 ]
You may blow the speaker. I had an alpine mx1100 at one ohm and blew in 30 mins.. Now have it at 4ohms [ THOMAS  Mar 10, 2015 ]
Yes. You'll have to wire the voice coils in parallel to get the 1ohm load. [ willie  Mar 10, 2015 ]
I have a rockford fosgate 750 watt amp at 1 ohm to each sub and they sound very good [ ALEJANDRO  Mar 10, 2015 ]
Thanks for your question. For information on selecting the best amp for your subs 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 between the amp models and help you make the best choice for your system. [ Krissy  Nov 09, 2014 ]  Staff
it depends on what impadence you plan on using. if u set them up as 4ohm jumped and seal them together with one resistor in the back of the box you can run alot of power @ 2ohms. so look for a mono amplifier that has an RMS of 1200 or higher @ 2ohms. thats how I would do it. [ GERALD  Jul 10, 2015 ]
Thanks for your question. For information on selecting the best amp for your subs 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 between the amp models and help you make the best choice for your system. [ Krissy  Jul 17, 2014 ]  Staff
I forwarded your question to an Advisor and they responded with the following: You can check out the wiring diagram for two of those subs and a mono amp here: http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/2DVC_2-ohm_mono.jpg If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Apr 13, 2014 ]  Staff
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