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Rockford Fosgate T1D415 Power 15″ T1 4-Ohm DVC Subwoofer

Brand: Rockford Fosgate
Model Number: T1D415
UPC: 780687328962
Rockford Fosgate
Model Number: T1D415
UPC: 780687328962

Rockford Fosgate T1D415 Power 15″ T1 4-Ohm DVC Subwoofer

  • Symmetrical dual progressive roll tear resistant poly-cotton spiders
  • Proprietary 8 AWG insulated allmetal input spring terminal connection
  • Optimized and matched magnetic and complicance geometry
  • Periodic-stitched fatigue resistant tinsel lead wire
  • High-temp voice coil with spun-laced Nomex® re-inforcement collar
  • 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

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Product Description

Features & Specifications



Rockford Fosgate T1D415 Power 15″ T1 4-Ohm DVC Subwoofer

Rockford Fosgate T1D415 Power Series subs were designed by Rockford Fosgate for ultimate high-power, high-volume bass. Whether you’re putting together a system for serious competition or simply to satisfy your taste for terrific bass, these subs produce massive low-frequency reproduction that’s as authentic as it gets.

More bass with a radial heat sink and a longer excursion

A radial heat sink is attached directly to the top of the magnet construction of the Power Series Rockford Fosgate T1D415 15″ subwoofer. This unique copper heat sink directs heat away from the voice coils, keeping them cooler and more efficient. It also protects the voice coils from stray magnetic energy, which can cause performance issues. That’s all well and good, but what does it mean to you? It means you’ll be able to handle more power and produce greater bass, which is a good thing. The heavy cast aluminium frame of the sub provides a sturdy foundation for extreme cone excursion, while the expanded pole piece and raised backplate allow the sub to hit deeper lows without “bottoming out.”

Bass beats that draw a crowd

A hard anodized aluminum dust cap covers and protects the entire cone, displaying the glossy Rockford Fosgate emblem. This Rockford Fosgate T1D415 sub has a responsive paper cone reinforced with Kevlar® fibres (also used in bulletproof vests). The result is classic warm bass from an almost unbreakable cone. The enlarged rubber surround is attached to the cone using a novel technique that improves available cone area by 25%, allowing this sub to push more air for even more bass.

Impedance selection secured by a fuse

The SWIFTTM terminals on Rockford Fosgate’s Power Series subs allow you to design exactly the system you want – high-power or multi-sub — without having to worry about intricate cabling. To securely pick 1 or 4 ohms, simply rotate the impedance selection jumper. The jumper is also fused to prevent inadvertent overload on your sub. This sub makes it easier to reconfigure your system if you decide to add another sub in the future. You can use these subs in a sealed or ported enclosure to get the bass you desire for your system.

The Rockford Fosgate T1D415 subwoofer has two 2-ohm voice coils with a jumper to quickly wire them in series or parallel; the voice coils cannot be wired independently.

SWIFT Terminal (Selectable Woofer Impedance Fused Termination): Rockford’s unique SWIFT Terminal (Selectable Woofer Impedance Fused Termination) provides a simple and convenient method of selecting the dual voice coil subwoofer’s impedance. The fused protection from severe overload conditions is also provided by the impedance jumper. The voice coils are wired in parallel while the jumper is in the 1-ohm position, and in series when the jumper is in the 4-ohm position. The sub also comes with a second, non-fused jumper.

Please consult your amplifier owner’s manual for lowest recommended impedance for the Rockford Fosgate T1D415

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Brand Rockford Fosgate   Model Rockford Fosgate T1D415
Product: Rockford Fosgate T1D415 Power 15" T1 4-Ohm DVC Subwoofer

Size 15 -inch
Impedance 4 Ohm
Cone Material Kevlar reinforced paper
Surround Material Santoprene
Ideal Sealed Box Volume (cubic feet) 2.25
Ideal Ported Box Volume (cubic feet) 2.66
Port diameter (inches) 4
Port length (inches) 10
Free-Air No
Dual Voice Coil Yes
Sensitivity 88 dB at 1 watt
Frequency Response 25 – 500 Hz
Max RMS Power Handling 1000
Peak Power Handling (Watts) 2000
Top Mount Depth (inches) 8 1/2
Bottom Mount Depth (inches) 9
Cutout Diameter or Length (inches) 13 15/16
Vas (liters) 102
Fs (Hz) 27
Qts 0.51
Xmax (millimeters) 16.4

RMS Power

2001 Watts & Above

Car Subwoofer Features

Dual Voice Coil

Car Subwoofer Size



4 Ω

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Rockford Fosgate offers a 1 year limited warranty


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