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Rockford Fosgate Power T1D212

12" dual 2-ohm voice coil component subwoofer

Item # 575T1D212

Rockford Fosgate engineered Power Series subs for ultimate high-power, high-volume bass.

Read more from Crutchfield writer, Bob B.

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$449.99 each

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About the Rockford Fosgate Power T1D212

Crowd-drawing bass beats

Rockford Fosgate engineered Power Series subs for ultimate high-power, high-volume bass. The Power Series T1D212 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.

Crowd-drawing bass beats

Rockford Fosgate engineered Power Series subs for ultimate high-power, high-volume bass. The Power Series T1D212 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.

More cone area = more bass

Rockford Fosgate uses their patented VAST 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

A hefty cast aluminum frame 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 1 or 4 ohms. If you're thinking about adding another sub down the line, this impedance selector simplifies reconfiguring your system.

The jumper is also fused to protect your sub from accidental overload. 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 600 and 1350 watts RMS at 1 or 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 12" dual voice coil subwoofer with selectable 1- or 4-ohm impedance
  • Kevlar® reinforced paper cone with aluminum dust cap
  • rubber surround
  • cast aluminum basket
  • metal grille included
  • power handling: 800 watts RMS (1600 watts peak power)
  • sensitivity: 85 dB
  • top-mount depth: 6-3/4"
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # T1D212
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What's in the box:

  • 12" Dual 2-ohm voice coil subwoofer
  • Grille
  • Fused 1-ohm/4-ohm SWIFT jumper (installed)
  • Non-fused 1-ohm/4-ohm SWIFT jumper (not installed)
  • Twelve 1-3/4" Allen head screws
  • 4mm Allen head bit
  • Installation/Operation manual (English/ French/ Spanish/ German)

Customer reviews

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Rockford Fosgate Power T1D212 Reviews

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More details on the Rockford Fosgate Power T1D212

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Features
Enclosure Compatibility

Features

Dual 2Ω Voice Coils: The Rockford Fosgate T1D212 subwoofer features dual 2Ω voice coils and a jumper to easily wire them in series or parallel, presenting either a 1Ω or 4Ω load; 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 setting 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 1Ω position the voice coils are wired in parallel; with the jumper in the 4Ω position the voice coils are wired in series.

Note: A second jumper is included with the subwoofer, described in the manual as non-fused. Visually, however, this jumper also appears to be fused, but at a higher threshold than the factory installed jumper (possibly high enough to make it effectively non-fused).

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.

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.

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 T1D212 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.

Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Rockford Fosgate optimize the subwoofer's motor structure, voice coil alignment, and suspension to yield the best possible performance.

Inductive Damping Heat Sink: The Inductive Damping Heat Sink (IDSH) secures directly to the top of the magnet structure to improve system efficiency by reducing both distortion and back EMF (Electo-Magnetic force). It also radiates heat to reduce the voice coil temperature.

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

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.

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 and a -3 dB point of 32 Hz
  • High Output: internal volume of 2.25 cubic feet using a 3" x 13-3/4" x 25-3/4" slot port; this yields a tuning frequency of 40 Hz

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Fosgates are my favorite speaker of all time. This would be the first time I bought a power series subwoofer. The T1's at 2 ohms was the perfect choice for me since I am going from a dual sub setup to a single sub in a groundshaker bass tube. Since this sub has the selectable 1 Ohm impedance I can get everything out of my fosgate prime 750 amp to run this T1 at 1 Ohm. I cant wait to get it setup and see how it sounds. [ Derrick  Jul 30, 2017 ]
A
After extensive research, this was the best bang for the buck. Rockford is a very well known, tried a true, audio company. And the customer service for the company is the absolute best. Good customer service is the number one selling point to me. [ BLAKE  Mar 24, 2017 ]
A
Rockford Fosgate has superior products! [ Dyvin  Jan 24, 2017 ]
A
I bought this sub simply because it fits all the specs I was looking for in a sub plus I like the quality and assurance Rockford offers. Guess I will have an update after I actually get it and hears it. [ Mikhail Salter  Jul 25, 2016 ]
A
I have always wanted a phenomenal sound system. Over time I worked and saved, and I'm about to build my dream system. I want the best of the best and Rockford can deliver that for me. Thank you for being number one. [ Adam  Apr 06, 2016 ]
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1 question already asked

Q
how do I switch the swift terminals? should I use the jumper with fuses or no fuses?
[ Justin  Jan 29, 2019 ]
1 answer
A
The jumper needs to be set so the ohms you need the subwoofer to run at lines up with the arrow on the subwoofer. As for which jumper, fused or non-fused, to use, I recommend using the fused jumpers unless you are able to do or to have someone do a professional setup and calibration of the system My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  Feb 02, 2019 ]  Staff

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