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Rockford Fosgate Power T212D2

Dual 2 ohm 12" Power Stage 2 Subwoofer

Discontinued
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Rockford Fosgate Power T2D212

OUR PRICE: $749.95

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Rockford Fosgate Power T212D2

Dual 2 ohm 12" Power Stage 2 Subwoofer

$429.99

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NVX 20 ft. of True Spec 8 Gauge Speaker Wire

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20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

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2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

$7.99

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  • 12" Dual 2 Ohm Power Stage 2 Subwoofer
  • Power Handling:
    • Peak: 2000 watts
    • RMS: 1000 watts
  • Impedance: Dual 2 ohm
  • Anodized aluminum voice coil former
  • High excursion thermo-rubber surround
  • Precision cast and vented aluminum alloy basket
  • Massive triple stacked magnet motor assembly
  • Parabolic triangular cone geometry support system
  • Removable and reversible screw concealing ring
  • Mirror image symmetrical spiders
  • Sensitivity: 85 dB
  • Frequency Response: 28 - 250 Hz
  • Mounting Depth: 8.875"
  • Motor Size: 304 oz. triple stacked
  • 1-year SonicElectronix.com warranty

Product History:

Rockford Fosgate T2D212 thumbnail
(newest, current model)
Rockford Fosgate T212D2 thumbnail
(previous model, replaced by Rockford Fosgate Power T2D212)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
2000 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
1000 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
28 - 250 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
85 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
19 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Silver
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Thermo-Plastic Elastomer
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.5 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.5 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
8-7/8"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
10-13/16"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
89%
4 Star
11%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.7
Features
4.9
Design
4.8
Usability
5.0
alex

Lutz, FL

Overall
Durability
Value
Features
Design
Usability
do not

December 19, 2005

rockford is a good brand, but the older models were much nicer. the HE and HE2s are much better. these new "stage" subs aren't bad, but aren't the best deal

10 of 12 found this helpful

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Kelsey

Hilo, HI

Overall
Durability
Value
Features
Design
Usability
Great Product!

March 13, 2007

I previously owned this subwoofer and it does damage! If you want loud, this is the way to go! It is very loud for this price and wont let you down.

7 of 8 found this helpful

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Natural speed

Maryland

Overall
Durability
Value
Features
Design
Usability
Holy

March 3, 2009

This sub is rediculous. I have it hooked up to a power acoustik 4000 watt amp, the sub is wired to 4 ohms. I am running 1200 watts rms to the sub. although its rated at 1,000 rms watts, this sub handles the 1,200 watts like its nothing, and it is loud as all getout. People think that the bigger the cone surface is or the more subs you have the louder. completely false. The real thing that matters with subwoofers is not size or how many you have, but the is RMS wattage, and magnet weight. this sub has crushed people who have a pair of 15's or even four 12's. I can literally be heard coming from around a mile and a half away. This sub sounds so great even when turned up to the max, it hits every note spot on. On a song called hoods run down by lil wyte there is a base check, and I swear this thing goes on a 4 inch excursion. It is unreal watching it excursion so far. I have never heard any distortion in the sub or popping. Overall an amazing sub. sounds amazing and looks great.

5 of 6 found this helpful

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Alan

Greenwood, IN

Overall
Durability
Value
Features
Design
Usability
extremely hard hitting sub!

February 16, 2009

this sub hits very hard and clean so if you are more of an audiophile than pure show off this one is for you and believe you'll turn heads but is clean hitting bass!

5 of 6 found this helpful

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josh

Plainfield, IL

Overall
Durability
Value
Features
Design
Usability
wow

October 12, 2007

this subwoofer is amazing i never thought one 12 would bump harder than most 2 12's this sub is perfect plays great lows and can handle ALOT of power im pushing 1300 rms on it and it never skips a beat i built a ported box to the rockford specs and it is by far the best sub ive ever owned worth every penny now i just need 2 :) im already knocking stuff loose in my car tho wanna see it in action go to realmofexcursion.com and go to videos and go to rockford and watch the T2 12 videos they're ridiculous...

5 of 6 found this helpful

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skeets

middleboro, ma

Overall
Durability
Value
Features
Design
Usability
amazing!

March 19, 2009

i installed a custom stereo in a good friends 1500 chevy extended cab pickup using 2 that's right 2 T2 12" woofers in a custom ported box tuned to 40 hz. he was running 2 T1000's at 1 ohm they were both pushing 1500 rms into these things stupid crazy. plus i upgraded his entire electrical starting with a new alternator (350 amps at cruising speed), 2 gel cells up front 4 kinetic 600's with a rockford 50 farad cap. and everything was O gauge in this beast. plus a 300 amp battery isolator the correct way to connect 2 batt banks! whole truck was dbl layered with dynamat extreme. i worked the truck for a week taking my time. after everything was in and done i was blown away. iv heard some very f'in loud systems. mostly at comps but this thing was just dumb. he had 2 sets of kicker RS series components running a 6004 power series amp as well. alpine in the dash. it was just beautiful everything blended very well. i would deff recommend these things. i own the T1 12" ported and it knocks my socks off

5 of 7 found this helpful

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Paul

Cadillac, MI

Overall
Durability
Value
Features
Design
Usability
awesome

July 21, 2009

I have two of these bad boys, made a custom box to rockfords specs. and these subs pound! the sound quality is amazing I've owned alpines, JL's, And audiobahns and by far the T2's are the most crisp and clear sound I've ever gotten out of subwoofers. they are pricey but Sonic has got the best price on them. overall I'm very, very satisfied and highly recommend these subs (if you have the cash flow) don't under power and make sure to build box to specs and you'll get the most out of these..

3 of 4 found this helpful

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Raul Hernandez

Albertville, AL

Overall
Durability
Value
Features
Design
Usability
Hard Htting Beasts!!=]

February 27, 2009

I own 2 of this beasts!! in a super bass box in a Escalade powered by a Rockford Fosgate t2000bd and they hit HARD!!!. I am thinking of buying 1 more.So that it will hit HARDER!!!!!!!

3 of 4 found this helpful

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Jizzle

Augusta, Georgia

Overall
Durability
Value
Features
Design
Usability
one word.........WOW

March 3, 2010

I have 4 of these guys running off 2 T2000 RF Amps in a Grand Cherokee......long story short...I've replaced my rear windshield at least 4 times in the last year......0 gauge wire on everything....couple batteries...RF cap....I can be heard 2 miles away....if you got the money....do it!!!!!!!!

1 of 3 found this helpful

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Accessory Tools and Products

Accessories added

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

Your Price $29.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $37.85

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $53.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $97.99

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $64.87

Stinger Sound Dampening Bulk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

Your Price $94.97

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $87.63

Dynamat Sound Dampening Bulk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $159.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $74.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $8.97

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $6.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 Rockford Fosgate Power T212D2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 Rockford Fosgate Power T212D2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Rockford Fosgate Power T212D2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 Rockford Fosgate Power T212D2 Subwoofers

2 Channel Amp

4 Channel Amp

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Product Summary

Manufacturer

Model Number

T212D2

UPC

780687315184

Weight

58.00lbs

Internal SKU

t212d2

Internal Product ID

6147

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate Power T212D2

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