In an attempt to outdo themselves, Jason and Craig built a control station on top of the inside of the tailgate. Lower, the tailgate and the end user can control every aspect of audio perfection including precise system tuning, subwoofer capabilities, and listening options, thanks to the awesome Drivesoft computer. This cool setup is housed directly behind a grand total of eight 16-volt Powermaster batteries, not including one 12-volt Powermaster unit, which is used to start the behemoth. Supplying juice to this arsenal of voltage are five 300-amp Powermaster amplifiers, which are mounted to two brackets bolted to the 6.0L block. Keeping tabs on the charging and voltage system is a slick Powermaster billet control station that enables the MTX crew to select which alternators are used when powering the system. Now a work of audio art, the Cadillac needed some extra attention paid to its body.
A mound of prototype MTX Thunder Elite amps power the four 10-inch MTX Thunder 8500 subs,
J.P. Customs, of Monroe, Wisconsin, performed the installation of the Lexani body kit and then painted the EXT with House of Kolor Cranberry and black two-tone with a marbleized silver stripe separating both of the colors. An E&G Classics billet grille finished off the body mods and now the only thing missing for the earth-shattering Caddy was new rolling stock. Twenty-seven-inch Lexani Magnum wheels fill the wheelwells with Nitto 305/45/R27 tires wrapping the huge hoops. Stopping the extra-large rolling mass are 15-inch SSBC disc brakes with MTX logos machined into each caliper.
Built in six weeks, the Jackhammer demo truck proved to be worth every drop of blood, sweat, and tears at the '06 SEMA show, and drew crowds of spectators who lined up to hear the unnatural power of two 22-inch subs.