American Bass XMAXXX 15" 4000w RMS Subwoofer - SSA STORE
Amazon.com: Timpano 12" Sub D2 2500 Watts Max Power Dual 2 Ohm, 12 Inch Car Subwoofer 23.5 mm High Xmax, TPT-T2500-12 D2, 3 in Voice Coil, Competition Sub Woofer for Car Audio
Custom Ported Sub Box Enclosure for 1 12" American Bass XMAX XMAXXX X MAX Sub | eBay