Rockford Fosgate T1D415 15" Dual 4-Ohm Subwoofer Accessories Use the high-pass filter for

Use the high-pass filter for smaller speakers

double-stitched V-Groove surround

Two TMS65 6

The DRC uses a compact dashboard-control format with a display

Rockford Fosgate T1D415 15" Dual 4-Ohm Subwoofer Accessories Use the high-pass filter forThe Rockford Fosgate T1D415 is a 15 inch dual voice coil car subwoofer designed for systems that need substantial low frequency output without moving to multiple drivers. Its dual 4 ohm voice coils and selectable impedance terminal support flexible amplifier matching. It is intended for a properly designed sealed or ported enclosure and a dedicated subwoofer amplifier. With 1,000 watts RMS power handling, the T1D415 is suited to listeners building a