The Power Series T1D415 Dual 4-Ohm subwoofer builds on innovative new Rockford Fosgate technologies. These bad boys have patented VAST technology that increases surface cone area up to 25%. 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 T1D415 is here!
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.
Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.
Stitched Tinsel Leads
Improved reliability and performance by reducing fatigue and possible shorting.
Anodized Aluminum Voice Coil Former
Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat...
VAST Surround - Subwoofers
The Vertical Attach Surround Technique significantly increases a subwoofer's effective radiating...
Flex Fit Basket - Subwoofer
The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position.
Allows the voice coils to quickly be configured in a Series or Parallel wiring configuration.
IDHS™ Inductive Damping Heat Sink
Secures directly to the top of magnet structure to improve system efficiency by reducing both...
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