Alpine SWR-T12

Type-R Thin 12" 4-ohm shallow-mount subwoofer

Item #: 500SWRT12

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3 Reviews | 1 question - 1 answer

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What good is a shallow-mount sub if it doesn't move air? Alpine's Type-R Thin subwoofers combine low-profile design with high power handling to pump out powerful bass in your vehicle's hard-to-fit spaces. These shallow subs offer a mounting depth of 3.5 inches, but their cone excursion is nearly as long as that of their regular counterparts — you'll hear deep, satisfying bass from the resulting massive air movement.

Big bass, not much space
The special spider design uses a series of adjacent rolls to get the cone moving without requiring a lot of space, combining with the advanced motor structure that reduces the sub's profile while maintaining accuracy. A dynamic neodymium magnet structure allows the sub to handle more power than the typical shallow-mount sub.

Handles plenty of power
The SWR-T12 12" thin subwoofer handles up to 600 watts RMS for tremendous thump. Its aluminum woofer cone works with the multi-roll Santoprene™ surround for performance that will really surprise you. The finned aluminum heat sink is directly coupled to the frame for rapid heat dissipation that'll keep your sub running cool. Type-R Thin subs present ideal solutions for applications with limited available space, such as pickup trucks and compact cars.

To drive this single subwoofer, we recommend a mono amplifier rated between 450 and 900 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Priced per speaker

Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

Product Highlights:

  • 12" 4-ohm shallow-mount subwoofer
  • aluminum cone with Santoprene rubber surround
  • cast aluminum frame with radial finned heat sink
  • frequency response: 26-200 Hz
  • power handling: 300-600 watts RMS
  • peak power: 1,800 watts
  • sensitivity: 84 dB
  • top-mount depth: 3-1/2"
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Hands-on research

What's in the box?

Download owner's manual

  • 12" Thin-mount (4-ohm) subwoofer
  • Rubber trim-ring (installed)
  • Hex-key
  • Application Guide (Eng/Fre)
  • Customer Care Registration Card
  • Limited Warranty Card (US/Canadad)
  • Important Notice! (Eng/Fre)

Product Research

Features
Enclosure Compatibility

Features

Alpine Type-R Thin Subwoofer: The Alpine Type-R Thin subwoofer series combines the low-bass performance and power handling of Alpine's traditional Type-R subwoofers in a thin package optimized for extremely small enclosures. The new Type-R Thin boasts no less than 7 unique Alpine technologies in its industry-first design. These innovations allow the Type-R Thin to have the output and power handling of the traditional Type-R series in less than half the depth. The new Type-R Thin design has the same DNA of the standard Type-Rs; demanding cleaner, deeper bass extension, faster, more accurate transients, and even greater output capability.

Parabolic Aluminum Cone with Force Transfer Assembly: A Heavy-duty magnet assembly calls for heavy-duty cone materials, such as parabolic aluminum cone woofer. This specially engineered aluminum cone is reinforced by an injection-molded force transfer assembly, giving the cone structure outstanding stiffness while minimizing moving mass. A centering ring in the force transfer assembly is also engineered to lock the voice coil assembly in place. This makes the entire piston assembly extremely strong and linear.

FEA Optimized HAMR Surround: The High-Amplitude Multi Roll (HAMR) Surround Design allows for extreme excursions without sacrificing valuable cone area. FEA Optimized for linearity and made with injection-molded Santoprene , the HAMR surround is a key part of the suspension system that provides accurate, distortion-free control at extreme excursions.

1.5lb Neodymium Magnet with 4" Voice-Coil: The Type-R Thin subwoofer's 1.5lb neodymium magnet has 5x the magnetic strength than standard ferrite magnets used for most subwoofers. This powerful magnet combined with a massive 4" (100mm) voice coil delivers increased power handling and more accurate, louder, cleaner bass with even more control.

Segmented Spider Design: You can count on Type-R Thin subwoofer to deliver strong, impactful output like its predecessors. Its Revolutionary Segmented Spider Design provides the Excursion of a tall subwoofer. Most shallow-mount subwoofers have less output than traditional deep subwoofers, since their shallow frame limits how far their cones can move at high power levels. The Type-R Thin subwoofer uses Alpine's patent pending Pass-Through Gap Geometry, allowing the unique Thermoplastic Elastomer Segmented Spider to completely pass through the motor structure. This means the cone and voice coil assembly have the clearance needed for over 50mm of peak-to-peak excursion, allowing for massive output even in such a shallow frame.

FEA Optimized Dual-Sided Machined CRC Motor Structure: An FEA Optimized Dual-Sided Machined CRC Motor Structure creates a symmetrical magnetic field with evenly distributed flux density to greatly reduce distortion, while further improving power handling and output.

Radial Vented VC Heat Sink & Airflow Management System: Alpine's Patented Radial Vented VC Heat Sink and Airflow Management System (helps to minimize power compression and ensures reliable long playing time by actively pulling (or transferring) output-robbing heat away from the Voice Coil.

Cast Aluminum Frame: The new cast aluminum frame is directly coupled to the machined aluminum shorting sleeve assembly. This allows the entire frame to act as a heat sink for sustained power handling, even in the most extreme of applications.

Speaker Terminals: This Alpine Type-R Thin subwoofer features a pair of heavy-duty screw-terminals on one side of the woofer's basket that will accommodate up to 8-gauge speaker wire. A hex-key is provided to adjust the set-screw terminals.

Gasket Cover: Alpine uses a Concealed Mount Gasket System to cover the mounting screws for a clean look. The black rubber gasket ring comes already installed on the woofer and needs to be removed before drilling the mounting screws (not supplied). The gasket ring then snaps back into place once the woofer is mounted.

No Break-in Period: There's no need to play your sub for hours to break it in to achieve consistent performance. This sub is designed to deliver consistent performance right out of the box. Since this revolutionary design is made with an injection mold resin, rather than phenolic stiffened textile, this new spider requires no break-in to achieve ideal performance. A Co-Molded Aluminum collar attaches the voice coil to the spider to ensure a reliable, high-strength design.

Enclosure Compatibility

Thin Mount: The Alpine Type-R Thin series subwoofer has been engineered to offer more installation flexibility and application versatility to build the ideal sound system. At 3-1/2" deep, this 12" sub provides deep bass performance where it normally couldn't fit. And the 0.6 cu/ft ideal sealed enclosure size (or 1.0cu/ft ideal vented enclosure size) means great bass performance can go just about anywhere in your vehicle.

Recommended Sealed Box Volume: The recommended sealed box sizes range from 0.4 cu/ft to 0.75 cu/ft. Within this range, the ideal size is 0.6 cu/ft.

Recommended Vented Box Volume: The recommended vented box sizes range from 1.0 cu/ft to 1.5 cu/ft. Within this range, the ideal size is 1.0 cu/ft. A slot port with the following dimensions should be used: 3.625" (W) x 3.5" (H) x 28.75" (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 open the box, verify contents, 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.

Alpine SWR-T12 Reviews

Average Customer Review:

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Great bass in small space!

Written By Gary Z, Garner NC on Thursday, May 15, 2014

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I installed one of these in a .65 cubic ft. space saver box under the seat in my 2011 Silverado. Sound is great solid drum and bass notes. I have it hooked up to a Kenwood excelon 900-5 amp pushing about 400 RMS to the sub. Couldn't be more pleased. Worth the money only 12" sub that will handle .45-.75 cubic ft. of air space.

Pros: 12" sub small enclosure

Cons: None

Best shallow mount in the CORRECT box!!

Written By zachz, los angeles, ca on Monday, July 18, 2011

I threw one of these in my truck under the seat. I knew it was only one shallow 12 but I wasn't too impressed. Then I realized the box was too small and I put a bigger one in between the front and rear seats. WOW. Even though this is a shallow mount, it still needs about 1 cubic ft of airspace and lots of power and it hits very hard. For a shallow mount, nothing even comes close. There isn't much info on these, and they are pretty expensive but you wont be disappointed.

2005 F250 Crew Cab.

Written By JV, Anaheim, CA on Friday, June 03, 2011

I installed 2 SWR-T12's behind the back seat of my 2005 F250. These thing sound GREAT!! They are being powered by an Alpine MRX-M100 amplifier with an external bass knob. I wasn't sure what to expect because there isn't much info about them and I couldn't find them on display anywhere. The sound quality is amazing, the bass is LOUD and DEEP! I can't believe that they are shallow mount subs, they remind me of my old JL audio W6 12's. I'm extremely happy with my purchase.

Get everything you’ll need to enjoy your new Alpine SWR-T12

It's critical to have good wire, and none is included with the sub.
Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
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Questions & Answers Ask the community. Share your knowledge.

1 question already asked

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  Mar 26, 2014 ]  Staff