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Rockford Fosgate T2D412

1200W 12" Power T2 Series Dual 4 ohm Subwoofer

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List price $849.99

$499.99

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Too Much Power To Handle

The T2D412 Power Series 12" Subwoofer by Rockford Fosgate has a peak power rating of 2400 watts and a RMS rating of 1200 watts. With this much power you can rest assure that you will be the envy of your block, as you stroll down your street with some car rattling bass. Constructed with a hard anodized cone and dust cap for strength and durability the Power Series subs will keep going now matter how long your listening sessions last. Also equipped with Inductive Damping Heat Sink, that 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. If you are looking to take your car audio system to the next level, the T2D412 will not only overwhelm you but simply blow you away.

 
Aluminum Dust Cap Cone

Aluminum Dust Cap & Cone

To increase the strength, weight, and thermal capacity of the subwoofer, a hard anodized cone and dust cap has been used. A Parabolic triangular cone support is used to reduce piston flex and cone distortion. The result is excellent heat transfer, reduced distortion, higher power handling, and a better sounding subwoofer!

 
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.

 
Rockford Fosgate inverted mounting

Reverse Mounting Compatible

The removable trim ring can be installed in the front or back side of the subwoofer. This enables the subwoofer to be mounted in either direction. No matter which way you install the subwoofer, it will still look great with a cosmetically finished look. Inverted mounting of the sub shows off the large magnet structure of this giant subwoofer.

 
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.

 

General Features:

  • 12" Dual 4 ohm T2 Power Series Subwoofer
  • Power Handling:
    • Peak: 2400 watts
    • RMS: 1200 watts
  • Impedance: Dual 4 ohm
  • Hard anodized aluminum dustcap and cone
  • High excursion Thermo-Rubber Santoprene surround
  • Mirror image symmetrical tear and fatigue resistant poly cotton spider
  • Parabolic triangular cone geometry support system
  • Precision cast and vented aluminum alloy basket and rigid frame
  • Optimized motor magnetics with extended vented pole and bumped backplate
  • Die-cast motor case and heatsink
  • Removable and reversible screw concealing ring
  • Ultra-high temp anodized aluminum voice coil and former
  • Fatigue resistant and reduced strain "stitched on" flexible lead wire design
  • Multi-point high-temp/high-strength neck joint bonding technique
  • Spun-laced Nomex insulating reinforcement collar
  • (IDHS) Inductive Damping Heat Sink
  • Custom insulated/isolated compression input terminal assembly
  • Flat edge wound copper clad aluminum wire
  • Triple stacked ferrite magnet structure
  • Sensitivity: 83.1 dB
  • CEA-2031 Compliant
  • 1-year SonicElectronix.com warranty

Package Includes:

  • Power DVC Subwoofer
  • Trim Ring
  • 4 Socket Head Trim Ring Screws
  • 8 Socket Head Wood Screws
  • Socket Head Driver Bit
  • Installation and Operation Manual

Product History:

Rockford Fosgate T2D412 thumbnail
(newest, current model)
Rockford Fosgate T212D4 thumbnail
(previous model, replaced by Rockford Fosgate T2D412)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Power T2 (Rockford Fosgate)
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.
2400 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.
1200 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.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
4"
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".
83.1 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.
Black
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Anodized Aluminum
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-Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Triple Stacked
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
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.75 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.50 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.
1.75 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.
2.25 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.
9"
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.
39.9 Hz
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.
13.6 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.
0.59
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.
0.67
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.
6.8 ohms
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.
5.31

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
88%
4 Star
6%
3 Star
6%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.6
Features
4.6
Design
4.9
Usability
4.8

Avian Graham

south bend IN

Overall
Durability
Value
Features
Design
Usability

Crazy sub!!

April 20, 2011

I have one of these in a small chevy cobalt and, that thing pounds.. its alot louder than the 2 P3s i had before.. Im glad i put some dynamat in the trunk. If u get this sub u gonna need some dynamat..

2 of 2 found this helpful

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N/A

woodsburg, NV

Overall
Durability
Value
Features
Design
Usability

T2

October 7, 2010

These are the best subs on the market!!!!! Don't let any other sub get your attention. If you wanna be the best, you have to have the best, and the best is the T2s. i have 2 of these in the trunk of my skyline. I have two T2500.1 running 1 for each sub, and no one has every beat me at a competition. Btw this is the second time I've had this set up. The first time I got these subs they were taken from me because I got 3 sound violations and they took my subs.

1 of 1 found this helpful

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Anthony

whitehall, MI

Overall
Durability
Value
Features
Design
Usability

Great Sub

July 8, 2014

I bought the T2 back in December 2012 and it's still sounds great. I was thinking about picking up another one until I saw the price. I paid $380 for my T2 and wanted to pick up another one until I checked a couple days ago and saw the price went way up. Even though the price went up I would still recommend this sub. It has been going strong since 2012 and is one of the best subs I have ever owned.

0 of 0 found this helpful

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michael

Trinidad and Tobago

Overall
Durability
Value
Features
Design
Usability

Great Buy

June 4, 2014

I have 2 in my car truck great buy big bass will rock your car the only thing i find is the port to connect the wire could be better and you have to break them in good MICHAEL

0 of 0 found this helpful

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Calvin

Polkton, NC

Overall
Durability
Value
Features
Design
Usability

Big Boy Sub For The Money

November 3, 2013

I hooked up two T2's that I been had for about six months.They are in separate boxes that are 2.25cuft each and I wired them too a 1ohm load with a Pioneer Premier D2000SPL Amp for 2000watts rms. I'm also running a Premier Head Unit and Clarion EQS746 and 0ga wire of course and these BIG BOYS hit HARD&CLEAR but what else can you expect from a RFT2....Enough Said Go For A Pair!!!

0 of 0 found this helpful

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Tyler

Cincinnati, OH

Overall
Durability
Value
Features
Design
Usability

Amazing quality, Could not be happier!

September 17, 2013

Ordered a set of these for my '98 Cirrus. One of the main reasons I ordered these was the material and craftsmanship. My last set of subs also had an aluminum cone, and I adored them to no end! I could not bring myself to pay this kind of money for a sub with a paper cone (and yes, I know some brands make better subs with paper cones, they just aren't for me). When the subs finally came in, they were just as impressive looking as I had hoped! The build was fantastic! The spring terminals were very strong, no fear of the wires shaking loose! They are loud and proud even with only 500watts each! Can't wait to have my local shop build a custom box for em, and get a T1500 amp for these bad boys later on down the road!

0 of 0 found this helpful

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John

Pensacola, FL

Overall
Durability
Value
Features
Design
Usability

Slams

April 24, 2013

These subs will drop some lows for sure unfortunately my box and port is too small even with them inverted,it was built for my old (silver) T1D412's and isn't near enough for these subs full potential output. I'm currently looking into buying/building a proper sized box for them to get the most out of them. Powering 2 of these T2D412's with a RF T2500.1bdcp amp and it just hits crazy hard,just posted a review of that amp as well,great combination

0 of 0 found this helpful

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Mateo671

Guam

Overall
Durability
Value
Features
Design
Usability

Great buy

November 17, 2012

what can i say?really was a smart choice.i have one in a ported box tuned to 40hz and this sub gets down!as of right now im the only one where im from that has this sub. people freak out that this is a single sub cause it hits harder than two 12s. I've been through 20+ different sets of subs from kickers to jl audio to crossfire to RE Audio,the list goes on, and now im so happy i wanna sell this one and buy two brand new!

0 of 0 found this helpful

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jack

Reno, NV

Overall
Durability
Value
Features
Design
Usability

Beasly Sub

March 18, 2012

I've got one of these in a custom 3cubic ft box @ 32 hz and wow. Everyone who I've given a demo says it's the loudest single sub setup they've ever heard if not the loudest in general. This beast is top quality, once you see one in person you can appreciate the superior design. Sound Quality is surprisingly really good too. I listen to all kinds of music and it definitely keeps up in the SQ department.

0 of 0 found this helpful

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michael

bristol, TN

Overall
Durability
Value
Features
Design
Usability

the best

February 5, 2012

This sub is amazing i just bought them and replaced my 2011 p2s running on a kenwood excelon 1200x on 1200 rms and soon i going to be running two. One for each sub so i can get full power i say this is an awsome buy.

0 of 0 found this helpful

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DamnIzThatOreo

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability

Monster in my trunk

December 28, 2011

The guys or so different from other subs. If you need something that makes your car shake then these are the beasts that you should have in the trunk. I prefer these in a bigger car cause putting these in small cars will screw your car up. By the way To make them sound better you need a bigger amp.

0 of 0 found this helpful

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piyush

Canada

Overall
Durability
Value
Features
Design
Usability

headturners

August 27, 2011

I've got two of these monsters taking up entire trunk space in my bmw 540i. everytime i crank them up my eyes get all watery and i need earplugs to prevent myself from going deaf. i would recommend these to anyone who wants high quality SPL. The price is ridiculously low compared to me buying it anywhere else. Nothing beats SonicElectronix.

0 of 0 found this helpful

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Jason B

Glendale AZ

Overall
Durability
Value
Features
Design
Usability

I have 2 of these

March 28, 2011

I have these powered by a T2500 cp and it POUNDS! My windshield needs to be reinstalled because it blew the seal! These subs sound great and shake my neighbors house so bad he complained about stuff falling off his walls!

0 of 0 found this helpful

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kaisen

Kapaa, HI

Overall
Durability
Value
Features
Design
Usability

T2

March 27, 2011

This sub SLAMS! I am running 1200 watts to this sub in an extra cab and it does what it says it would. Never had any problems and sounds very clean and deep. This sub is worth every penny; I highly recommend this sub if you are into blowing eardrums.

0 of 0 found this helpful

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mike

el paso

Overall
Durability
Value
Features
Design
Usability

the third review

November 9, 2010

i know about db levels and the guy that said he hits 198 or what ever bd level it is is full of crap. the world record is 182bds and that is with 8 15" subs. but these subs do hit extremely hard so i would recomend anyone to buy them

0 of 0 found this helpful

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Aaron

Maple Grove, Minnesota

Overall
Durability
Value
Features
Design
Usability

other review

October 23, 2010

The other review, you definitely were not hitting 195db legal. so yeah, but I've heard 1 of these off 1200rms and its just hard to breath. these things are amazing.

0 of 0 found this helpful

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Thaddius

Columbus, GA

Overall
Durability
Value
Features
Design
Usability

not all that

November 23, 2011

I have a Rockford Fosgate 3000.1 BD amp. My Kicker l 5 blew, so I got the T2D412 thinking it would be better. I was wrong. If I could send it back, I would get the Kicker L7. The Rockford doesn't sound that good or that loud. I thought T2 would sound a lot better then they do. They also can't handle the amp that well. Sonic did a good job sending these to me, but they are not worth the money that I paid for.

0 of 2 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

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

Your Price $49.99

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

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 $119.99

Dynamat Sound Dampening Bulk Kit

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

Your Price $159.95

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 $99.99

20 oz. Bag of Poly-Fil

Polyester fiber fiberfill adds better bass to your system.

Your Price $5.99

12 oz. Can of Adhesive Spray

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

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $3.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

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

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

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

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

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

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Rockford Fosgate T2D412 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate T2D412 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Rockford Fosgate T2D412 Subwoofers

Mono Amp

4 Channel Amp

4 Rockford Fosgate T2D412 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

T2D412

UPC

780687330545

Weight

55.70lbs

Internal SKU

t2d412

Internal Product ID

22591

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 T2D412

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