Electro-Voice DL15ST 400-Watt 15" Low Frequency Speaker
Subwoofers | Maximus Series 6.5" 400 Watt Car Subwoofer | Audio Legion | Audio Legion
Amazon.com: MTX TN12-04 12 Inch Single Voice Coil 400 Watt Car Audio Bass Subwoofer and Q Power 12 Inch Single Heavy Duty Vented Subwoofer Enclosure : Electronics