Innovative technologies allow the T1D412 Power subwoofer to perform like a larger woofer over the previous model. The T1 12” features dual 4-Ohm voice coils, 800 Watts RMS power handling, and includes a grille with integral trim ring.
Overview
The Power Series T1D412 Dual 4-Ohm subwoofer builds on innovative new Rockford Fosgate technologies. Built for cars and trucks, these bad boys have patented VAST technology that increases surface cone area up to 25% so the T1D412 performs like a much larger woofer over the previous model. The new FlexFit basket not only looks the part but it provides extreme flexibility for extreme installations. Clean, high tech and ready to set off car alarms, the T1D412 is here!
- Symmetrical dual progressive roll tear resistant poly-cotton spiders
- Periodic-stitched fatigue resistant tinsel lead wire
- Proprietary 8 AWG insulated allmetal input spring terminal connection
- High-temp voice coil with spun-laced Nomex® re-inforcement collar
- Optimized and matched magnetic and complicance geometry
- Anodized aluminum heat sinking dust cap
- Kevlar fiber reinforced paper cone
- Rigid die-cast aluminum basket
- Optimized pole piece and spider venting
- Anodized aluminum voice coil former / copper clad aluminum wire
- 1 Year Warranty
Technologies

Stitched Tinsel Leads
Improved reliability and performance by reducing fatigue and possible shorting.

CEA-2031
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.

VAST Surround - Subs
The Vertical Attach Surround Technique significantly increases a subwoofer's effective radiating cone area up to 25%.

Klippel Verified
Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.

Anodized Aluminum Voice Coil Former
Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation (up to 100° at full power levels). Unlike traditional plastic substitutions, aluminum acts like a heat-sink to quickly dissipate thermal build-up on the voice coil. This keeps subwoofers cool during high SPL conditions.

FlexFit Basket - Subwoofer
The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position.

SWIFT™ Terminals
Allows the voice coils to quickly be configured in a Series or Parallel wiring configuration.

Inductive Damping Heat Sink
Secures directly to the top of magnet structure to improve system efficiency by reducing both distortion and back EMF (Electo-Magnetic force). Also radiates heat to reduce voice coil temperature.
Specifications | |
---|---|
Xmax (mm) | 16 |
Re (Ohms) | 6.50 |
Vas (Liters) | 55.8 |
Qms | 4.50 |
Qes | 0.71 |
Qts | 0.61 |
Shipping Weight | 33.3 Lbs. (15.10 Kg.) |
Speaker Connector | Compression Terminal |
Nominal Impedance | Dual 4-Ohm |
Sd (cm2) | 548 |
Woofer Displacement | 0.106 cu. ft. (3.0 Liters) |
Cutout Diameter | 11.25 in. (285 mm) |
Fs (Hz) | 29.2 |
Mounting Depth | 6.75 in. (171 mm) |
Voice Coil Diameter | 3" (75.4 mm) |
Power Handling (Watts RMS) | 800 Watts RMS 1600 Watts Max |
Size | 12" |
Le (mH) | 2.4 |
Magnet Weight (oz) | 123 oz. (3.48 kg) |
SPL (dB @ 1w/1m) | 85 |
Subwoofer Type | Standard |
Voice Coil Type | Dual Voice Coil |
Sealed Box Volume (Vb) | 1.25 cu. ft. (35.3 Liters) |
Vented Box Volume (Vb) | 1.75 cu. ft. (49.5 Liters) |
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