Ray Smith looks at the "Jackhammer" subwoofer at the MTX Audio booth during the 2007 International International Consumer Electronics Show (CES) in Las Vegas, Nevada January 9, 2007. The 22-inch subwoofer wieghs
Just in case some of you wondered what a MTX Jackhammer looks like... ($15000 price tag) : r/CarAV
MTX JH4512-X2D Ported enclosure with two 12" JackHammer 45 subwoofers at Crutchfield