MTX Audio JH5001 Jackhammer Series 500W x 1 @ 1-Ohm Class D Mono Block Amplifier - Creative Audio
Monster MTX Jackhammer Sub | AVForums South Africa
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
Just in case some of you wondered what a MTX Jackhammer looks like... ($15000 price tag) : r/CarAV