New XXX XDH800A 8" 350 Watt Amplified Car Audio Subwoofer Sub Tube Amp XDH-800A New XXX XDH800A 8" 350 Watt Amplifier Car Audio Subwoofer Sub Tube XDH-800A 350 Watts Power One High Quality 8 woofer 1.5 4-Layer Aluminum Voice Coil Frequency Response Subwoofer: 45-300Hz