MTX Audio Jackhammer T9922-44

The Jackhammer T9922-44 from MTX Audio is an impressive 21" (53 cm) subwoofer that is characterized by its technical sophistication. Weighing in at 369 pounds, this superwoofer offers a whopping 4000 watts of RMS power. It features a high-temperature resistant 6.5" voice coil, a precision aluminum magnet structure and a carbon fiberglass dust cap. Its technical specifications include a frequency response of 17Hz to 150Hz, an impedance of 2x4 ohms and an efficiency of 91.55 dB. This subwoofer is ideal for demanding audio enthusiasts looking for both high performance and clear sound quality.

This monster superwoofer weighs 369 pounds, so you may need to plan for some vehicle modifications, including suspension and electrical upgrades. The JackHammer is also an engineering marvel, incorporating key technologies that make it incredible. The unit starts with a sand-cast aluminum basket and a 56.25-pound magnet structure, making the unit over 3 feet tall.

Internally, the unit features a 6.5" high temperature voice coil with 17 AWG aluminum wiring, allowing the subwoofer to achieve 2.5" one-way excursion or Xmax, and the ability to handle 4000 watts RMS. An aluminum shorting ring and progressive roller spider reduce distortion, allowing the subwoofer to play loud and clear even at high power levels.

The carbon and fiberglass dust cap has an excellent stiffness-to-weight ratio, which increases sensitivity, allowing the unit to deliver high sound pressure levels at lower power levels. The unit is equipped with 8 AWG screw terminals on both voice inputs so that large power cables can be used to ensure that voltage loss is minimized and the subwoofer gets all the power you can feed it.
The T9922-22 may seem overkill, but sometimes you just need to be heard to be seen.