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Rockford Fosgate Power T1D412

800W 12" Power T1 Series Dual 4 ohm Subwoofer

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List price $499.99

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$349.99

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Get Our Expert's True Opinions!

While the Rockford Fosgate Power T1D412 is a great subwoofer, there are other 12" subs of comparable, and even superior specs for a better value. The NVX VCW124 subwoofer provides greater power (1000W RMS) while costing you half as much. The RE Audio SXXv2-12D4 provides also you with a more powerful output of 1100W RMS and a greater excursion for $100 less!

Best Bang for Your Buck!
Rockford Fosgate
Power T1D412
NVX
VCW124
RE Audio
SXXv2-12D4
Your Price $399.99 $199.99 $299.99
RMS Power 800W 1000W 1100W
Excursion 16.4mm 20mm 24mm
Sensitivity 86dB 85dB 88dB
Woofer Composition Kevlar Fiber Woven Fiber Dual Composite 2-Piece Cone
Surround Thermo-Plastic Elastomer Foam Rubatek Foam
Dual 4 ohm Voice Coil



 

General Features

  • 12" Dual 4 ohm T1 Power Series Subwoofer
  • Power Handling:
    • Peak: 1600 watts
    • RMS: 800 watts
  • Impedance: Dual 4 ohm (selectable 2 or 8 ohm)
  • High Excursion TPE (Thermo-Plastic Elastomer) surround
  • VAST™ surround increases speakers effective cone area improving performance
  • Parabolic triangular cone geometry support system
  • Precision cast and vented aluminum alloy basket
  • Dual opposing spiders improve mechanical stability under high excursion
  • Removable and reversible screw concealing ring
  • Anodized aluminum voice coil former
  • Copper clad aluminum wire
  • SWIFT connection allows for quick impedance selection
  • Compression wiring terminals
  • Embedded copper heat sink shorting ring reduces back EMF (Electro-Magnetic Force)
  • The slot mounted frame design allows for tweaking of the mounting position
  • Metal mesh grille included for added protection
  • Sensitivity: 86 dB
  • CEA-2031 Compliant
  • 1-year SonicElectronix.com warranty

Product History:

Rockford Fosgate T1D412 thumbnail
(newest, current model)
Rockford Fosgate T112D4 thumbnail
(previous model, replaced by Rockford Fosgate Power T1D412)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Power T1 (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.
1600 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.
800 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.
3"
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".
86 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.
16.4 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.
Dark Gray
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.
Kevlar Fiber
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.
Double 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.
Yes - Included
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.

Sealed
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.
1.25 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.
1.25 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.
1.75 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.
6-3/4"
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.
11-7/16"
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.
29.2 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.
55.8 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.
0.61
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.
0.71
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.
6.50 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.
4.50

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
80%
4 Star
16%
3 Star
0%
2 Star
4%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.5
Features
4.8
Design
5.0
Usability
4.8
Kevin

Mesa, AZ

Overall
Durability
Value
Features
Design
Usability
Holy bass!

November 14, 2014

This subwoofer is absolutely incredible! The bass is so clean and loud all without missing a beat, it puts out an insane amount of air. It also comes with security screws and a special drill bit to make sure not just anyone can remove it along with its own grille which was a nice bonus. I expect to be using this subwoofer for a long while. The only minor problem that I encountered was that the basket of this subwoofer had a little bit larger ridges so I had to modify my box a little bit but not a big problem for this absolute beast of a subwoofer!

1 of 1 found this helpful

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Southpaw

Tylertown,MS

Overall
Durability
Value
Features
Design
Usability
T1D412

November 5, 2014

T1 subs thump bass, PERIOD !!
If you can fit them in your ride, pick up
one or two.

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William

Semmes, AL

Overall
Durability
Value
Features
Design
Usability
Put some bump in your trunk

October 24, 2013

Though the price is expensive, you pay for quality. These rockford fosgate subs are ridiculously loud i have 2 of them in a 99 jeep grand cherokee powered buy a rockford fosgate power 1500 amp. these speakers are built great and made to last you will not be disappointed pith this purchase!

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Jeffro

GERMANTOWN, WI

Overall
Durability
Value
Features
Design
Usability
bangin subs

September 30, 2013

I have two of these beasts in a ported box and they slam! I had them in a bandpass ported box and they didn't sound so well! I suggest a big ported box these subs need air! I had 2 pioneer 1000w subs and the Rockfords hit harder hands down! However the pioneers are a great buy also cuz they hit pretty hard also!

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Austin4x

Baltimore, Md

Overall
Durability
Value
Features
Design
Usability
As advertised

September 24, 2013

This item arrived on time and as described. Would recommend!

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Austin4x

Baltimore, Md

Overall
Durability
Value
Features
Design
Usability
No complaints

September 24, 2013

The item was exactly as labeled

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Patrick

Northern AZ

Overall
Durability
Value
Features
Design
Usability
Breathtaking

June 28, 2013

I have two of these 12s in a ported box i built, 4 cubes after displacement tuned to 33hz on 1000w RMS.. I need to say no more. When you sit in my car, you can sit and watch your clothes and hair move while it feels like your eardrums are about to cave in. My windows all flex, bumpers flex, even made the antenna on my car fall off going down the road. I can pull up behind somebody and watch their license plate rattle with my bass line. Not to mention they sound great while doing it.. even in a big ported box they still play accurate and punchy on fast bass notes, even keep up with fast double bass drums.

If anybody is considering these, dont think twice. you wont regret it. Also remember you get what you pay for

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william

henderson, NV

Overall
Durability
Value
Features
Design
Usability
never consider any others

June 9, 2013

Everytime someone hears my sub for the first time they ask how many subs i have. once they find out I have one it blows their mind. If u don't want to take a lot of space but still want to thump outta control then this will do the job I am now and will forever be rockin fosgate after owning this sub

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Spfinator

MI

Overall
Durability
Value
Features
Design
Usability
Great subs

February 21, 2013

I have had my t1's for about three years now. They are running at 1ohm on a t1500.1 bdcp. I read here about someone saying the subs smelled when they turned them up, it's normal. It's just excess glue curing all the way and the smell goes away. For these subs, it's part of the break in process. When the gains are tuned properly and everything is set up properly, these subwoofers are AMAZING. I love mine. The only thing I would recommend for anyone purchasing them is to have a larger ported box than is recommended. Mine is tuned to 34hz and it is perfect to my ear.

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JJ

Pensacola, FL

Overall
Durability
Value
Features
Design
Usability
Awesome subs!!!

November 26, 2012

I've had to of these powered by a RF P1000.1 for over 4 years now and they're still slamming, once they break in they are beastly. I pulled everything from my truck to get it painted and I'm upgrading to a RF T2500.1bdcp, 2 T2D412's and a RFC10HB and can't wait to install them. Also having to do some additional power upgrades as well but thanks to Sonic Electronix for having everything I need.

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J

PA

Overall
Durability
Value
Features
Design
Usability
Amazing

October 25, 2012

These subwoofers by Rockford Fosgate are amazing! I have two of these on a Rockford Rosgate T1500-1bdCP and they hit HARD. The sound quality is amazing, it hits the lows extremely well. They are in my 2000 Dodge Stratus.

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Ricky

Medina, OH

Overall
Durability
Value
Features
Design
Usability
Great Sub

October 8, 2012

I have two of these in a ported max flow box built to specs ran by an alpine 2 channel 2000 watt amp with a 0 gauge power lead and a 4 gauge lead going to each terminal. They sound better than any other subs that i have had and all my friends love them. The bass is very accurate and has a very solid kick to it. You can even run more than the recommended max power to it if you know what your doing.

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Phillip

Broussard, LA

Overall
Durability
Value
Features
Design
Usability
WOW!!

September 3, 2012

I have one in an ext cab F-150 running at 2 ohms on a ZX1000.1 and it just pounds. its in a ported box built to spec. I got the amp on 4 AWG power and ground and the sub on 10 AWG. beore that i had 2 CVR 12s on a memphis 1100 and this one 12 puts both to shame, nothiong compares to it!!! for just one 12 it sounds like you have 3. best sub i have ever had!!!

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Vm

Dville, VA

Overall
Durability
Value
Features
Design
Usability
Thunder

June 4, 2012

Sounds great it's almost a little too much. I have it paired with an Audiobahn. This thing out performs anything I've ever heard. High Quality sound, not too bad on price. Be sure to understand it does require I think an 11" or 11.5" diameter opening. You may need to do some cutting on your box. Otherwise highly recommended. You won't regret spending a little more.

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mainard

Wesley Chapel, FL

Overall
Durability
Value
Features
Design
Usability
Awesome Sub

March 23, 2012

I have one right now at 4ohms running on brutus brz 1700.1 @ 600 watts and this thing pounds really loud and very deep bass my box is 1.75 l ported, im planning to get another one and bring it down to 2ohm to get 1200 watts on the BRZ. i was debating in getting the 2ohm load to get to 1ohm at 1700watts but it might damage the Sub but 1200 for 2 sub should be more than adequate.

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fernando

Clinton, OK

Overall
Durability
Value
Features
Design
Usability
Great value

September 1, 2011

Item as described, fast shipping.

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MICHAEL

DORAL, FL

Overall
Durability
Value
Features
Design
Usability
Great Sub

May 28, 2011

Heard one of these playing it sound quite wonderful the bass is clear and solid and sounds different to other subs. Talk about built it's the best and my most loved feature is the copper heatsink within to draw heat away from the huge voice coil so you can play longer and cooler unlike other brands

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Vendetta

Bentonville, AR

Overall
Durability
Value
Features
Design
Usability
awesome

April 24, 2011

This piece of equipment is something worth buying I have not had any troubles with it and it hits nice and hard and clean..... I have two of these subs hooked up to a Hifonics BRZ 1700 watt RMS amp and it is just kicking no other.... I recommend you buy this

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uhhhh

westland MI

Overall
Durability
Value
Features
Design
Usability
Rockford fosgate T1D412

March 29, 2011

This sub woofer works great never had any problems and I'm still pounding just as hard as I was when I first got it 6 months ago.
Order it NOW!

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bheryford

Yuba City, CA

Overall
Durability
Value
Features
Design
Usability
T1D412 Review!!!

February 24, 2011

The Rockford Fosgate T1D412's are beyond the BEST "BANG FOR YOUR BUCK" when it comes to speakers!! These bad boys will rock any car or truck in just about any box! At roughly 30lbs., they are fairly light weight and the conservatively rated 800 watts RMS is nothing compared to what this speaker can actually handle! Each speaker can easily handle up to 20% more than it's actual rated power!! I was running 2 T1D212's with 2 t1000-1BDCP's and THEY BUMPED!!! The speakers were in a custom built down-firing vented wedge box made my myself specifically designed to fit in the back of a 99 Ford Ranger XLT extended cab with the jumper doors. With this box, you were actually able to have the seats all the way back, and leaned back quite a ways while still having super loud, clean, and deep bass!

Pros of the T1D412
*Light weight/versatile
*Conservatively rated at 800rms
*'Vast' cone design allows for more surface area of the woofer thus increasing SPL
*SWIFT terminals allowing for almost instant changing of the impedance (ohms) on the woofer without the hassle of guessing!
*Super strong heat sinks are built around the voice coil for superior cooling power!
*Aluminum Anodized and laser engraved dust cap make these speakers look like gods compared to other previous models
*New awesome looking Rockford rubberized grill to cover your pretty speakers!

Cons of the T1D412
*They give you the grills on these speakers for a reason. The aluminum dust cap is fairly easy to bend or dent. I did so just by knocking on it to see what it sounded like in the box.
*If your tight on money, not the most budget friendly.
*The rubber feet on the bottom fall off. But who needs them anyhow? They're only there if you set the speaker down on a hard surface, and they'll be in the sub box!
*The speakers are just bigger than any 12" sub box hole I've tried to put them in. You'll most likely end up taking a dremel or a router the the hole before installing.

Overall, my experience with these subs has been awesome. I absolutely couldn't be happier!!!

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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 $29.99

Single 12" Ported Enclosure Custom Black Baffle

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

Your Price $59.99

12" Dual Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $71.95

12" Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Sealed Enclosure w/ Premium Carpeted Finish

Your Price $71.95

12" Single Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Single Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $43.95

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

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 $9.99

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

12 oz. Can of Adhesive Spray

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

Your Price $6.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

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 $14.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

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

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

1 Rockford Fosgate Power T1D412 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate Power T1D412 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Rockford Fosgate Power T1D412 Subwoofers

Mono Amp

4 Channel Amp

4 Rockford Fosgate Power T1D412 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

T1D412

UPC

780687328948

Weight

35.00lbs

Internal SKU

t1d412

Internal Product ID

22589

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 T1D412