Amazon.com: H YANKA SODA-08ASW 400W 8 Inch Compact Underseat Car Subwoofer with Built-in Amp, Slim Powered Subwoofer for Car/Truck/Jeep Audio : Electronics
BAS8 - 8" 400 Watts RMS Class D Powered Subwoofer in Ported Enclosure,
12" SUBWOOFER 800WMAX / 400 WRMS – GENIUS AUDIO USA
EXL-X 6.5" Subwoofer 400 Watts Rms DVC 4-Ohms
EXL-X 6.5" Subwoofer 400 Watts Rms DVC 4-Ohms
PSB-400DSP Subwoofer Amplifier with DSP - 400W – Soundavo