Rockford Fosgate Power T1D415

2000W Peak (1000W RMS) 15" Power T1 Series Dual 4-ohm Subwoofer

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• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohms
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 88 dB

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Get a Free roll of NVX 25 ft. of True Spec 12Gauge EnvyFlex Speaker Wire (100% Oxygen-Free Copper). Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Rockford Fosgate Power T1D415

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Priced separately $729 98

Promo Savings of $29 99

Total price:

$699 99

Product Highlights

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohms
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 88 dB


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Authorized dealer

True Power You Can Feel

The T1D415 Power Series 15" Subwoofer by Rockford Fosgate has a peak power rating of 2000 watts and a RMS rating of 1000 watts. This sub will produce some ground shaking bass and is constructed with a kevlar fiber reinforced semi pressed paper cone and a VAST santoprene rubber surround. This woofer is also equipped with Inductive Damping Heat Sink, this helps radiate heat to reduce the voice coil temperature and keeps the sub operating at a safe operating temperature when pumping out high amounts of SPL. Add some bumps in your trunk and enhance your cars stereo system with this Power Series Subwoofer.

Rockford Fosgate Swift Terminals

SWIFT: Selectable Woofer Impedance Fused Termination

Making installation faster and easier, Rockford Fosgate developed SWIFT terminals. This system allows the nominal impedance of voice coils to quickly be configured in a Series or Parallel wiring configuration. Removing and inverting the center plug, a Series or Parallel wiring configuration is accomplished. The removable jumper also provides fused protection in severe overload conditions.

 IDHS Inductive Damping Heat Sink

IDHS: Inductive Damping Heat Sink

By securing the Inductive Dampening Heat Sink (IDHS) to the top of the magnet structure, Rockford Fosgate is able to improve the efficiency of their drivers. This is accomplished by reducing the amount of distortion and back Electro-Magnetic Force (EMF). The IDHS also radiates heat to reduce the temperature in the voice coil.

Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

By using an anodized aluminum voice coil former on their subwoofers, Rockford Fosgate is able to dissipate heat from the voice coil more efficiently. A hot voice coil can melt the adhesive bonds, which will lead to eventual subwoofer failure. The aluminum voice coil former acts as a heat-sink to dissipate thermal build-up on the voice coil cool during high SPL conditions.

CEA-2031 Rockford Fosgate Subwoofers

Conforms to CEA-2031

Rockford Fosgate has built this subwoofer to conform to the CEA-2031 loudspeaker power handling industry standards. This means that you can trust the subwoofer to have the capacity to safely handle the continuous (RMS) power rating. Having a CEA-2031 power handling is important when matching a subwoofer to an amplifier because the power ratings are accurate.

Rockford Fosgate Stitched Tinsel Leads

Stitched Tinsel Leads

To improve the reliability and performance by reducing fatigue and possible shorting, Rockford Fosgate has stitched the tinsel leads to the spider. The multipoint periodic stitching lead wires reduce the mass of the tinsel leads to spread the stress over a greater area. This improves the reliability and performance of the subwoofer.

Rockford Fosgate VAST Surround

VAST: Vertical Attach Surround Technique

In order to increase the surface area of the cone without causing any installation issues, Rockford Fosgate designed the Vertical Attach Surround Technique (VAST). By redesigning the manner in which the surround adheres to the basket, these speakers gain up to 25% more effective radiating cone area. This improves the nominal efficiency and maximum output.


Product Details:

  • 15" Dual 4 ohms Power T1 Series Subwoofer
  • Power Handling:
    • Peak: 2000 watts
    • RMS: 1000 watts
  • Kevlar Reinforced Pulp Paper Cone
  • Santoprene Rubber Surround
  • Symmetrical dual progressive roll tear resistant poly-cotton spiders
  • Periodic-stitched fatigue resistant tinsel lead wire
  • Optimized and matched magnetic and compliance geometry
  • Proprietary 8 AWG insulated all metal input spring terminal connection
  • Rigid die-cast aluminum basket
  • Anodized aluminum heat sinking dust cap
  • Spun-laced Nomex® re-enforcement collar
  • Optimized pole piece and spider venting
  • 3" High Temperature Aluminum Voice coil
  • 16.4 mm Xmax
  • Double Stacked Ferrite magnet motor structure
  • Frequency Response: 25 - 500 Hz
  • Resonance Frequency (Fs): 27.00 Hz
  • Sensitivity: 88 dB
  • Recommended sealed box volume: -
  • Recommended ported box volume: 2.12 cubic feet
  • Top-mount depth: 8.39"
  • Cutout diameter: 13.9375"
  • CTA-2031 Compliant
  • Authorized Internet Dealer
  • Includes protective subwoofer grille
  • 1-year Manufacturer's Warranty

  • Priced Individually

Product history:

Rockford Fosgate T1D415 thumbnail
(newest, current model)
Rockford Fosgate T115D4 thumbnail
(previous model, replaced by Rockford Fosgate Power T1D415)

Subwoofer Wiring Guide

Wiring Guide to Wire 1 Rockford Fosgate Power T1D415 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Rockford Fosgate Power T1D415 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Rockford Fosgate Power T1D415 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Rockford Fosgate Power T1D415 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details

Subwoofer Specifications
Power T1 Series
Subwoofer Size
Peak Power Handling
2000 watts
RMS Power Handling
1000 watts
Voice Coil(s)
Impedance (Per Voice Coil)
4 ohms
Voice Coil Material
Voice Coil Diameter
Frequency Response
25 - 500 Hz
88 dB
Xmax (millimeters)
16.4 mm
Subwoofer Design
Round / Circle
Main Cone Color
Woofer Composition
Kevlar Reinforced Pulp Paper
Woofer Surround
Santoprene Rubber
Magnet Structure
Double Stacked
Magnet Type
Subwoofer Grille
Yes - Included
Re-Cone Kit Available
CTA-2031 Compliant
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Optimum Sealed Box Volume
2.25 cubic feet
Minimum Ported Box Volume
2.12 cubic feet
Maximum Ported Box Volume
4.22 cubic feet
Top-Mount Depth (Mounting Depth)
Cutout Diameter
Shallow Mount Installation
Electromechanical Parameters
Free-Air Resonance (Fs)
27.00 Hz
Equivalent Compliance (Vas)
102 liters
Total Speaker Q Value (Qts)
Electrical Q Value (Qes)
Electrical Resistance of Voice Coil (Re)
6.5 ohms
Mechanical Q Value (Qms)
What is in the box?
User manual
Quick start guide
WITB: Subwoofers
Grille (attached)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


Model Number:




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Product and How-to Videos

  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?
  • How to Install a Car Subwoofer in a Box

Customer Ratings & Reviews

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Customer Reviews

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The T1 sub delivers on such an amazing level that I can't put what I want to say into words. So I will keep this short as possible. If you want to have outstanding bass with high spl this is your sub. On the other hand, if you want sound quality then this sub will also please just about any audiophile. Just remember, if you want spl go ported, and if you want sound quality go with a sealed box. Like I said from the start, the T1 sub DELIVERS.

By Snake on October 20, 2014


found this helpful.

Good old Fosgate Power!

Installed this sub in my friends 98 Grand Prix in a custom box and so far it has managed to break his trunk latch and shake his rear spoiler loose. It's also very durable, getting fed 1000 watts daily on music and it hasn't had a single problem to date. Overall a very solid woofer.

By Austin on April 12, 2014


found this helpful.


I have two of these on a T1500-1 bd amp and they perform better
than any sub I have had in my Nissan Versa hatchback.
If you have the funds, I'd say buy this sub knowing that it
is money well spent.
P.S. I love the ability to switch between 2 or 8 ohms with just the
flip of a plug, and best of all only one pos and neg hook-up.

By Donnie on November 24, 2014


found this helpful.

Low rumble

For the first time, I am at a loss for words, from the moment you pick this sub up you will notice what a real sub feels like. There is nothing negative I could say, no bad comment, and no regrets. I listened to several songs, and no matter what type they sounded great. I have two in a ported box in a Nissan Versa hatchback. They are driven by a RF T-1000-1 constant power amp. If you can, get them and have no regrets.

By southpaw on December 9, 2013


found this helpful.

Updated Review

I had two of these on a Rockford T 1000-1bdcp and thought that was great, but then I put a Rockford T 1500-1bdcp on these subs and they took the word bass to a whole new meaning. These subs made everything in my Nissan Verse hatchback shake. The T 1000-1 amp is great, but it had these subs under powered. The tech at Sonic was correct, these subs on a Rockford T 1500-1bdcp is wicked strong. I highly suggest you get one or two if you can fit them in your ride.

By Southpaw on July 10, 2014


found this helpful.


Awesome sub. Hits hard! Highly recommended. I have one and it's louder than my friends two kickers.

By Jake on November 1, 2013


found this helpful.


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