Got enough juice? Get an amp for your new sub The fanatics at Rockford Fosgate are always testing the limits of bass — and that's how Power Series Stage 1 subwoofers were born. Ideally suited for use with Power Series amps, everything about these innovative woofers screams "hard-hitting sound."

The aluminum parabolic cone has a high-excursion rubber surround for the kind of travel that ensures max bass. The massive 124 oz. double-stacked magnet structure and oversized 3" copper-clad aluminum voice coils handle just about all the power you can throw at them. Spider venting keeps the woofer cool even when you run it long and hard.

The T112D2 12" subwoofer can blast away in either sealed or vented enclosures. The dual 2-ohm design lets you wire for high output or a multiple woofer setup.

Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Most car amplifiers are stable down to 2 ohms in standard mode, or 4 ohms in bridged operation.

  • 12" subwoofer with dual 2-ohm voice coils
  • aluminum parabolic woofer cone with rubber surround
  • cast aluminum basket
  • frequency response: 31-250 Hz
  • power range: 150-600 watts RMS (300 watts per coil)
  • peak power handling: 1,200 watts
  • sensitivity: 85.7 dB
  • top-mount depth 6-3/4"
  • sealed box volume: 1.0-1.5 cubic feet
  • ported box volume: 1.25-2.25 cubic feet
  • Recommended Q-Logic Box Type: 1, 2, 3
  • warranty: 1 year

Priced per speaker

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.

Rockford Fosgate T112D2 Reviews

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Good Sub

Written By skit_02, Vilseck, Germany on Monday, October 01, 2007

I like this sub a lot. It has a really good sound. I just wish I ordered the dual 4 ohms. I've had the Sub for 3 years, it has been through one car reck and still going strong. I wonder what the T2 sounds like, has to be better. If you have the cash for it and plan on keeping you system for a while this is the sub to buy. Just don't put a cover over the sub, the rubber suround will hit it.

big bass

Written By Burton, Ames Iowa on Friday, January 05, 2007

This sub is one of the best that i have herd i would suggest this to eny one if you wont a sub to hert your ears i would suggest this one it is the best one that i have herd make sure to get a big anp to hook up to it i would suggest a Rockford i have herd a lot of subs and this is the best that you can get.

Hands-on research

What's in the box?

Download owner's manual

  • One 12" woofer
  • 1 Metal concealing ring
  • 12 Self-tapping screws
  • 1 Allen bit
  • 4 Self-adhesive foam gasket sections
  • Installation and Operation manual

Product Research

Enclosure Compatibility


Dual 2-ohm Voice Coils: This woofer features dual 2-ohm voice coils that offer flexibility in wiring. When the voice coils are wired in parallel with each other, the woofer presents a 1-ohm mono load. When the voice coils are wired in series with each other, the woofer presents a 4-ohm mono load. In addition, each coil may be connected to a different amplifier channel and each channel will see a 2-ohm load.

Woofer: The aluminum parabolic woofer cone is lightweight and extremely strong, giving the woofer very high power handling, low distortion, and superior bass response.

High Excursion Thermo-Rubber Surround: The use of a "tall/skinny" high excursion thermo-rubber surround allows for linear cone travel on a high excursion driver without reducing cone area.

Parabolic Triangular Cone Geometry Support System: By bonding an aluminum parabolic dust cap of equivalent size to the cone body, a balanced triangular structure is created. This system reduces piston flex and eliminates cone distortion.

Mirror Image Symmetrical Spiders: Dual-opposing spiders offer superior mechanical stability during high excursions, while maintaining linear travel.

Spider Support Ring: This integrated ring increases the bonding surface area between the voice coil former and spider, establishing a stronger joint. The result is increased mechanical power handling under high power/high excursion situations.

Anodized Aluminum Voice Coil Former: Aluminum voice coil formers offer superior heat dissipation over other commonly used materials. The hard-anodized finish increases the former strength. These two factors combine to improve the overall power handling characteristics of the subwoofer.

Precision Cast Aluminum Alloy Basket: A two-piece "basket in a bucket" design adds rigidity and eliminates multiple acoustic resonances. Additionally, the large aluminum mass helps reduce voice coil former temperature and increase power handling.

Double Stacked Magnet Motor Assembly: The stacked magnet assembly is used to create a powerful linear motor with increased excursion capability for superior bass output.

Slot-Loaded Spring Terminals: The proprietary, slot-loaded spring terminals will accept pin connectors and up to 8-gauge bare wire.

Concealing Ring: Once the subwoofer is mounted, the metal concealing ring can be installed to hide the mounting screws, giving the subwoofer a finished look.

Enclosure Compatibility

Recommended Sealed Box Volume: Rockford Fosgate recommends mounting this woofer in a sealed enclosure with an internal volume of between 1.0 cu/ft. and 1.5 cu/ft. with an ideal volume of 1.25 cu/ft.

Recommended Vented Enclosures: Rockford Fosgate recommends mounting the woofer in a vented enclosure with an internal volume of between 1.25 cu/ft. and 2.25 cu/ft. with an ideal volume of 1.75 cu/ft. One 4" port is recommended at the following lengths for each size enclosure:

Box Size Box Volume Port Length
Minimum 1.25 cu/ft. 14"
Recommended 1.75 cu/ft. 9"
Maximum 2.25 cu/ft. 6.5"

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