Pioneer TS-W3003D4 Champion Series Pro Subwoofer with Dual 4 ff Voice Coils and 2000W Max Power(one speaker) Pioneer 12" woofer that needs .85 to 1.75 cuft to work 2000w 12" woofer Pioneer 12" NOTE: It is a Pioneer TS-W3003D4 Champion Series Pro Subwoofer with Dual 4 ff Voice Coils and 2000W Max Power (one speaker ONLY)