Pioneer TS-W3002D4 Champion Series 12" 3500W PRO DVC Subwoofer 4+4 Ohm
Pioneer TS-A3000LS4 Passive Subwoofer Powerful Subwoofer with 1500 W Maximum Power 30 cm 90 mm Installation Depth IMPP Membrane Continuous Output 400 W Black : Amazon.co.uk: Electronics & Photo