Rockford Fosgate Power T1D212

800W 12" Power T1 Series Dual 2 ohm Subwoofer

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• 1600W Peak
• 800W RMS
• High Excursion TPE (Thermo-Plastic Elastomer) Surround
• SWIFT Impedance Selection
• Dual Opposing Spiders
• Parabolic Triangular Cone Geometry

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Product Highlights

• 1600W Peak
• 800W RMS
• High Excursion TPE (Thermo-Plastic Elastomer) Surround
• SWIFT Impedance Selection
• Dual Opposing Spiders
• Parabolic Triangular Cone Geometry


Rockford Fosgate

Authorized dealer

True Power You Can Feel

The T1D212 Power Series 12" Subwoofer by Rockford Fosgate has a peak power rating of 1600 watts and a RMS rating of 800 watts. This sub will produce some ground shaking bass and is constructed with a kevlar fiber reinforced semi pressed paper cone and a VAST santoprene rubber surround. This woofer is also equipped with Inductive Damping Heat Sink, this helps radiate heat to reduce the voice coil temperature and keeps the sub operating at a safe operating temperature when pumping out high amounts of SPL. Add some bumps in your trunk and enhance your cars stereo system with this Power Series Subwoofer.

Rockford Fosgate Swift Terminals

SWIFT: Selectable Woofer Impedance Fused Termination

Making installation faster and easier, Rockford Fosgate developed SWIFT terminals. This system allows the nominal impedance of voice coils to quickly be configured in a Series or Parallel wiring configuration. Removing and inverting the center plug, a Series or Parallel wiring configuration is accomplished. The removable jumper also provides fused protection in severe overload conditions.

 IDHS Inductive Damping Heat Sink

IDHS: Inductive Damping Heat Sink

By securing the Inductive Dampening Heat Sink (IDHS) to the top of the magnet structure, Rockford Fosgate is able to improve the efficiency of their drivers. This is accomplished by reducing the amount of distortion and back Electro-Magnetic Force (EMF). The IDHS also radiates heat to reduce the temperature in the voice coil.

Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

By using an anodized aluminum voice coil former on their subwoofers, Rockford Fosgate is able to dissipate heat from the voice coil more efficiently. A hot voice coil can melt the adhesive bonds, which will lead to eventual subwoofer failure. The aluminum voice coil former acts as a heat-sink to dissipate thermal build-up on the voice coil cool during high SPL conditions.

CEA-2031 Rockford Fosgate Subwoofers

Conforms to CEA-2031

Rockford Fosgate has built this subwoofer to conform to the CEA-2031 loudspeaker power handling industry standards. This means that you can trust the subwoofer to have the capacity to safely handle the continuous (RMS) power rating. Having a CEA-2031 power handling is important when matching a subwoofer to an amplifier because the power ratings are accurate.

Rockford Fosgate Stitched Tinsel Leads

Stitched Tinsel Leads

To improve the reliability and performance by reducing fatigue and possible shorting, Rockford Fosgate has stitched the tinsel leads to the spider. The multipoint periodic stitching lead wires reduce the mass of the tinsel leads to spread the stress over a greater area. This improves the reliability and performance of the subwoofer.

Rockford Fosgate VAST Surround

VAST: Vertical Attach Surround Technique

In order to increase the surface area of the cone without causing any installation issues, Rockford Fosgate designed the Vertical Attach Surround Technique (VAST). By redesigning the manner in which the surround adheres to the basket, these speakers gain up to 25% more effective radiating cone area. This improves the nominal efficiency and maximum output.


General Features:

  • 12" Dual 2 ohm T1 Power Series Subwoofer
  • Power Handling:
    • Peak: 1600 watts
    • RMS: 800 watts
  • Impedance: Dual 2 ohm
  • High Excursion TPE (Thermo-Plastic Elastomer) surround
  • VAST Santoprene surround increases speakers effective cone area improving performance
  • Kevlar fiber reinforced semi-pressed paper cone
  • Proprietary spider cooling vents
  • Ultra-High temp aluminum voice coil with laced Nomex insulating reinforcement collar
  • IDHS (Inductive Damping Heat Sink) for heat dissipation
  • Optimized motor magnetics with extended vented pole and bumped backplate
  • Parabolic triangular cone geometry support system
  • Precision cast and vented aluminum alloy basket
  • Dual opposing spiders improve mechanical stability under high excursion
  • High-temp and high-strength neck joint bonding techniques
  • Double stack ferrite magnet structure
  • Removable and reversible screw concealing ring
  • Anodized aluminum voice coil former
  • Copper clad aluminum wire
  • SWIFT (Selectable Woofer Impedance Fused Termination) connection allows for quick impedance selection using 10 gauge lead-in wire connections
  • Compression wiring terminals
  • Embedded copper heat sink shorting ring reduces back EMF (Electro-Magnetic Force)
  • Rigid die-cast aluminum frame
  • Hard anodized aluminum dust cap
  • Metal mesh grille included for added protection
  • The slot mounted frame design allows for tweaking of the mounting position
  • Sensitivity: 86 dB
  • CEA-2031 Compliant
  • 1-year warranty
Package Contains:
  1. Power DVC Subwoofer
  2. Trim ring
  3. 4 Socket head trim ring screws
  4. 8 Socket head wood screws
  5. Socket head driver bit
  6. Installation and operation manual

Check out the Rockford Fosgate T1D212 Owner's Manual

Product history:

Rockford Fosgate T1D212 thumbnail
(newest, current model)
Rockford Fosgate T112D2 thumbnail
(previous model, replaced by Rockford Fosgate Power T1D212)

Subwoofer Wiring Guide

Wiring Guide to Wire 1 Rockford Fosgate Power T1D212 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Rockford Fosgate Power T1D212 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Rockford Fosgate Power T1D212 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Rockford Fosgate Power T1D212 Subwoofers

2 Channel Amp

4 Channel Amp

Specifications & Details

Authorized Dealer
Authorized Dealer
Authorized Dealer
Subwoofer Specifications
Power T1 Series
Subwoofer Size
Peak Power Handling
1600 watts
RMS Power Handling
800 watts
Voice Coil(s)
Impedance (Per Voice Coil)
2 ohms
Voice Coil Diameter
86 dB
Xmax (millimeters)
0.65 mm
Subwoofer Design
Round / Circle
Main Cone Color
Woofer Composition
Kevlar Reinforced Semi-Pressed Paper
Woofer Surround
Thermo-Plastic Elastomer
Magnet Structure
Double Stacked
Subwoofer Grille
Re-Cone Kit Available
Recommended Enclosure Specifications
Minimum Sealed Box Volume
1.25 cubic feet
Maximum Sealed Box Volume
1.25 cubic feet
Minimum Ported Box Volume
1.75 cubic feet
Maximum Ported Box Volume
1.75 cubic feet
Top-Mount Depth (Mounting Depth)
Shallow Mount Installation
Electromechanical Parameters
Free-Air Resonance (Fs)
28 Hz
Equivalent Compliance (Vas)
55.8 liters
Total Speaker Q Value (Qts)
Electrical Q Value (Qes)
Electrical Resistance of Voice Coil (Re)
3.25 ohms
Mechanical Q Value (Qms)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?
  • How to Install a Car Subwoofer in a Box

Customer Ratings & Reviews

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kickin it old school

rock t1 is the most amazing speaker running at 1 ohm 1800watts rms with only 1/4 bass booster and its the deepest bas ive ever heard to me better than a w6 equal to w7 better price!

By manny on July 29, 2012


found this helpful.


This Subwoofer pounds HARD!!! Not only does it pound but has Great response and sound quality..ive set many car alarms off with this sub haha...Over all i Rate this sub the Best

By Greg on August 13, 2012


found this helpful.

Amazing sub

This is my first sub ever and I have it in a ported box powered by a Kenwood KAC-9105d amp running at 2 ohms and 900 watts in an extended cab s10. i only have the amp turned up half way and its hard to sit in the truck. For the little extra cash it is totally worth it

By Jay on July 25, 2011


found this helpful.

Bumpin Hoopty

I love the hell out of this sub. It hits hard!!! High or low bass. My rear view mirror, not very handy they when you got the bass hittin like it does. Sometimes the dude mirrors too. Made my box to specs, wrapped it, & now i can't wait to drive anywhere & everywhere. Friends say its hard to breath. I guess I'm just used to it. Buy this sub!! You won't be disappointed.

By Goof Troop on August 29, 2013


found this helpful.


Ordered this RF subwoofer with a RF P700-1BD. Already had made a custom fiberglass vented enclosure. This combo pounds. I have it installed in a Dodge Ram 1500. I am definitely very pleased with the customer service and that my large order was here in 3 days. Awesome!!!!

By Warren on March 7, 2013


found this helpful.


I have owned these for about four months. Do not buy them if you ever plan on buying something of lesser grade/value in the future. Nothing will ever be good enough again. Wire them @2 ohm in a ported box. I have 2000 watts going to each sub. There's a good chance you may wet yourself with excitement. These subs will flex your roof, windows, doors, etc if wired and installed correctly. I would highly recommend these speakers to anyone even remotely considering. They brought my faith back to the RF product. Back when everything was under rated for competition. You will spend a pretty penny or two on them, but spend it knowing you will never need another sub. Fap fap fap fap.

By Anthony on February 27, 2012


found this helpful.

Rockford fosgate T1 d2 12"

This is a really good sub and is well worth the money. If you want a system that hits really hard get these. The 12" or the 15" would be my recommendation. They can really handle the power well

By Andrew on October 28, 2013


found this helpful.

Great sub

I've got this sub in a custom center console box for the back of an extended cab f-150. I'ts getting about 2.65 cubes after displacement of the sub and the port. But as far as the sub goes its slams for 1 twelve under 1000 rms. I've got it runnin on a db drive. 1000.1 and it keeps up with all kinds of music. I just wish the sub itself hit the mids a little better. Other than this i think this sub is a pretty good value and I would recomend it.

By jay on November 3, 2011


found this helpful.

Rockford Thunderlude!!

I purchased this sub and have it installed into a 1.75" cubic ft. ported box in my Honda Prelude. I am pushing it with a Rockford Fosgate T1000.1 amp @ 1ohm. This sub is as advertised. (very loud!!!!). I replaced 2 Alpine R12's with this one sub and it produces as much bass. I did have my Alpines in a sealed enclosure though. Overall very VERY pleased!! I would recommed Rockford to anyone!!! Also I wasn't unpleased with my Alpines they were GREAT!! I'M just a ROCKFORD guy!!!

By Travis on October 15, 2011


found this helpful.


I have two of these in a Birch wood ported box, hooked up to a 1501bd Fosgate power amp, and these slam!!!! The bass is insane! I have the entire trunk covered with Second Skin spray deadener and two layers of Dynamat Extreme, and still the panels vibrate. For the price, you can't go wrong.

By Michael on May 22, 2011


found this helpful.


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