Rockford Fosgate T0D412

Power T0 12" subwoofer with selectable 2- or 8-ohm impedance

Item #: 575T0D412

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Rockford Fosgate engineered Power Series subs for ultimate high-power, high-volume bass. So whether you're building a system for serious competition or just to satisfy your appetite for great bass, these subs deliver colossal low-frequency reproduction that's as real as it gets.

Crowd-drawing bass beats
The Power Series T0D412 12" subwoofer features a responsive paper cone that's reinforced with the same Kevlar® fibers used in bulletproof vests — a hard anodized aluminum dust cap covers and protects the entire cone, showcasing the glossy Rockford Fosgate logo. The result? You get classic warm bass from a cone that's virtually indestructible. Rockford Fosgate uses a new technique to attach the oversized rubber surround to the cone that increases available cone area up to 25%, so this sub can push more air for even bigger bass.

Extended excursion for more bass
This T0 sub is housed in a hefty cast aluminum frame that provides a stable platform for extreme cone excursion, while an extended pole piece and bumped backplate allow the sub to hit deeper lows without "bottoming out." Special venting in the frame keeps the aluminum voice coils cool through heavy use for consistent bass performance over time.

Fuse-protected impedance selection
Rockford Fosgate outfits Power Series subs with their unique SWIFT™ terminals, which lets you build exactly the system you want — high-power or multi-sub — without complicated wiring. Just rotate the impedance selection jumper to safely choose between 2 or 8 ohms. The jumper is also fused to protect your sub from accidental overload. If you're thinking about adding another sub down the line, this sub simplifies reconfiguring your system. These subs work equally well in a sealed or ported enclosure, so you can choose the kind of bass you want for your system.

To drive this single subwoofer, we recommend a mono amplifier rated between 575 and 1125 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 12" subwoofer with with selectable 2- or 8-ohm impedance
  • Kevlar® reinforced paper cone with aluminum dust cap
  • Santoprene surround
  • cast aluminum basket
  • metal grille included
  • power range: 150-700 watts RMS (1400 watts peak power)
  • frequency response: 26-500 Hz
  • sensitivity: 84.1 dB
  • top-mount depth: 6-7/8"
  • sealed box volume: 1.25 cubic feet
  • ported box volume: 1.4-3.12 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

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.

Hands-on research

What's in the box?

Download owner's manual

  • 12" Dual 4-ohm voice coil subwoofer
  • Grille
  • Fused 2-ohm/8-ohm SWIFT jumper (installed)
  • Twelve 1-5/8" Allen head screws
  • 4mm Allen head bit
  • Installation/Operation manual (English/ French/ Spanish/ German)

Product Research

Features
Enclosure Compatibility

Features

Dual 4-ohm Voice Coils: The Rockford Fosgate T0D412 subwoofer features dual 4-ohm voice coils and a jumper to easily wire them in series or parallel; the voice coils cannot be easily wired separately.

SWIFT Terminal: Rockford's proprietary SWIFT Terminal (Selectable Woofer Impedance Fused Termination) offers a simple and convenient method of selecting the impedance presented by the dual voice coil subwoofer. The impedance jumper also provides fused protection from severe overload conditions. With the jumper in the 2-ohm position the voice coils are wired in parallel; with the jumper in the 8-ohm position the voice coils are wired in series.

Woofer: The Kevlar fiber reinforced paper cone has a hard anodized aluminum dust cap of equivalent size; the result is a lightweight and extremely strong cone, reducing piston flex and cone distortion.

VAST Surround: The Vertical Attach Surround Technique (VAST) increases a speaker's effective radiating cone area without increasing the size of the basket. The surround is made of durable Santoprene.

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.

Cast Aluminum Basket: The basket is a die-cast aluminum design to add rigidity and eliminate multiple acoustic resonances. Additionally, the large aluminum mass helps reduce voice coil former temperature and increase power handling.

Motor Assembly: The double stacked magnet assembly, extended pole, and bumped back plate are used to create a powerful linear motor with increased excursion capability for superior bass output.

Terminals: The proprietary spring terminals will accept bare wire up to 8-gauge.

Grille: A metal grille is included to protect the subwoofer and add a finished look. If the sub is bottom mounted and the back is visible, the grille can be disassembled and just the trim ring can be installed to cover the mounting screws.

CEA-2031 Compliant: Power handling on the T0D412 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle its rated power under continuous demand, not just for an instant.

FlexFit Basket: The Flex Fit frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.

Enclosure Compatibility

Ported Box: Two ported enclosures are recommend:

  • Optimum: internal volume of 1.75 cubic feet using one 4" diameter x 9" long port; this yields a tuning frequency of 40 Hz
  • High Output: internal volume of 3.12 cubic feet using a 3" x 13-3/4" x 25-3/4" slot loaded port; this yields a tuning frequency of 40 Hz

Sealed Box: When using a sealed enclosure, Rockford recommends an internal volume of 1.25 cubic feet. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Rockford Fosgate T0D412 Reviews

Average Customer Review:

3 reviews
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best entry subs on the market

Written By steve, Henefer, UT on Monday, October 14, 2013

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I had a pair of w6 and these Tzeros hit so much harder and cleaner.

Pros: constant power never missing or fading like other more costlier subs do

Cons: Don't sound so great in a ported box unless it's a better make... not some run of the mill box.

Great Sub

Written By KyleK, Livonia, MI on Thursday, July 07, 2011

This sub is a great deal. I have one in a 1.8 cubic foot ported box and it hits hard. Its knocked off my rear view mirror and knocked pictures off the wall in my house when I play it in my driveway. I recommend this to anyone.

T0D412

Written By Steve, nyc on Wednesday, April 20, 2011

I got two t0d412 for my 2008 acura mdx truck a month ago and have the box
custom made total cubic 6.22 with the speakers facing up , plus i got the alpine
pdx.1-1000 The box size is [ w=45, D= 22, H=15.5 this hit so hard it rip out the
center mirror from the front windshield, almost cost me a windshield. I have
the crossover tune @ 70hz, this hit hard with the boom especially hip hop or
reggae. I have the speakers hookup in parallel. I would recommend these
speakers the T0D412 to anyone who want to turn heads.

Get everything you’ll need to enjoy your new Rockford Fosgate T0D412

It's critical to have good wire, and none is included with the sub.
Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
These can be useful if you are building a custom box.
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1

(13)

T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(31)

Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

(53)

Dynamat Xtreme Trunk Kit

Dynamat Xtreme Trunk Kit

5 sheets, 20 square feet

Item #: 15419405

(14)

$169.99
Add to Cart
Dynamat SuperLite Tri-Pak

Dynamat SuperLite Tri-Pak

Triple package — 3 sheets, 12 square feet (Model #10612)

Item #: 15410612

(17)

$69.99
Add to Cart
Dynamat Xtreme Wedge Pack

Dynamat Xtreme Wedge Pack

1 sheet, 4 square feet

Item #: 15410425

(7)

$39.99
Add to Cart
Dynamat Dynaliner

Dynamat Dynaliner

One 54" x 32" sheet (1/8" thick)

Item #: 15411101

(6)

$69.99
Add to Cart
Dynamat 19100

Dynamat 19100

License Frame Kit

Item #: 15419100

(15)

$14.99
Add to Cart
Polyester Fiber Stuffing

Polyester Fiber Stuffing

Make your subwoofer think it's in a bigger box (1-pound pack)

Item #: 027808

(36)

$12.99
Add to Cart
Metra Speaker Terminal

Metra Speaker Terminal

Round terminal cup with binding post connectors (for do-it-yourself box builders)

Item #: 120TCRB

(14)

Metra Box Carpet

Metra Box Carpet

Carpet roll (54" x 5 yards) — available in 3 colors (Black)

Item #: 120TL3015

(24)

$39.99
Add to Cart
Rubber Feet

Rubber Feet

Item #: 125F1692

(4)

Metra Speaker Terminal

Metra Speaker Terminal

Round terminal cup with spring clip connectors (for do-it-yourself box builders)

Item #: 120TCRS

(6)

Corner Protectors

Corner Protectors

Item #: 1251536

(5)

Metra Speaker Terminal

Metra Speaker Terminal

Square terminal cup with binding post connectors (for do-it-yourself box builders)

Item #: 120TCSB

(7)

Springback Handle

Springback Handle

Item #: 125H1051K

(2)

Metra Speaker Terminal

Metra Speaker Terminal

Square terminal cup with spring clip connectors (for do-it-yourself box builders)

Item #: 120TCSS

(7)

Port Tube

Port Tube

4" diameter, 4-1/2" long

Item #: 125M1703

(2)

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