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Rockford Fosgate T2D415 Power T2 Series 15" subwoofer with dual 4-ohm voice coils

Item # 575T2D415

Power T2 subwoofers combine durable materials with built-like-a-tank engineering so you can rock steady over the...

Power T2 subwoofers combine durable materials with built-like-a-tank engineering so you can rock steady over the...

Item # 575T2D415

Shop all Rockford Fosgate Component Subwoofers

About the Rockford Fosgate T2D415

Dave Delamere

Rockford Fosgate's herculean sub

Power T2 subwoofers combine durable materials with built-like-a-tank engineering so you can rock steady over the long haul. These potent subs are designed for use with Power Series amps, handling huge amounts of power to give you performance that's as good as it gets.

Rockford Fosgate's herculean sub

Power T2 subwoofers combine durable materials with built-like-a-tank engineering so you can rock steady over the long haul. These potent subs are designed for use with Power Series amps, handling huge amounts of power to give you performance that's as good as it gets.

Rockford Fosgate T2D415 15" subwoofer

The T2D415's anodized aluminum cone and high-excursion surround combine to push big air for big bass.

Colossal magnet, epic performance

The T2D415 15" subwoofer uses an anodized aluminum cone with a high-excursion rubber surround for accurate, powerful bass. The huge 304-ounce magnet structure teams up with 4" voice coils for power handling up to 1,200 watts RMS or 2,400 watts peak. Whether you're a competitor or just a fan of great bass, you'll appreciate the extensive venting in the cast aluminum frame that keeps the woofer cool even during heavy use.

This Power Series subwoofer works in a sealed or ported enclosure. The dual 4-ohm voice coils allow you to wire your system to draw maximum power from your mono amp or to hook up multiple subs safely.

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Product highlights:

  • 15" subwoofer with dual 4-ohm voice coils
  • anodized aluminum woofer cone with rubber surround
  • cast aluminum basket
  • power range: 500-1,200 watts RMS (600 watts per coil)
  • peak power handling: 2,400 watts
  • frequency response: 20-250 Hz
  • sensitivity: 85.4 dB
  • top mount depth: 10"
  • sealed box volume: 2.0 cubic feet
  • ported box volume: 2.75 cubic feet
  • warranty: 1 year
  • MFR # T2D415

What's in the box:

  • One 15" woofer
  • 1 Metal trim ring
  • Twelve 1-5/8" Allen head wood screws
  • 4mm Allen bit
  • Installation and Operation manual

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Product Research

Features
Enclosure Compatibility

Features

Dual 4-ohm Voice Coils: The woofer features dual 4-ohm voice coils, offering wiring flexibility. When the voice coils are wired in parallel, the woofer presents a 2-ohm load; when the voice coils are wired in series, the woofer presents an 8-ohm load.

Woofer: The anodized aluminum woofer cone is lightweight and extremely strong, giving the woofer very high power handling, low distortion, and superior bass response. The dustcap is also anodized aluminum.

Parabolic Triangular Cone Geometry: By bonding an aluminum parabolic dust cap of equivalent size to the cone body, a balanced triangular structure is created. This system reduces piston flex and eliminates cone distortion.

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

Stitched Tinsel Leads: The multipoint periodic technique of stitching the tinsel lead wires reduces the effective mass of each tinsel lead and spreads the stress and strain over a greater area, improving the reliability and performance of the subwoofer. These stitched tinsel leads withstand extreme duty cycles, fatigue, and high current that is critical to a robust design.

Anodized Aluminum 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 two-piece die-cast aluminum "basket in a bucket" design adds rigidity and eliminates multiple acoustic resonances. Additionally, the large aluminum mass helps reduce voice coil former temperature and increase power handling.

Triple Stacked Magnet Motor Assembly: The stacked magnet assembly is used to create a powerful linear motor with increased excursion capability for superior bass output.

Terminals: The custom isolated compression terminals are spring loaded and will accept pin connectors and bare wire up to 8-gauge.

Concealing Ring: The metal concealing ring can be installed to hide the mounting screws, giving the subwoofer a finished look.

Enclosure Compatibility

Vented Enclosure: RockfordFosgate recommends mounting the woofer in a vented enclosure with an ideal internal volume of 2.75 ft³. One 6" diameter x 17" long port is recommended, resulting in a tuning frequency of 36 Hz.

Sealed Enclosure: If a sealed enclosure is used, RockfordFosgate recommends 2.0 ft³.

High Output Enclosure: Dimensions are also given for a high output slot loaded enclosure; 3.25 ft³ with a 3" x 16.5" x 22.5" slot port, resulting in a tuning frequency of 38 Hz.

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