The 372 PBM powered subwoofer incorporates a specially designed 275 watt high current class G linear amplifier, nearly identical to the flagship 452 PBM. The driver is a 15" long throw design with a composite cone and an enormous motor assembly. The amplifier, driver voice coil characteristics, and cabinet dimensions were optimized to work together to provide deep, highly defined bass at very low frequencies. The enclosure is heavily braced internally to prevent undesirable cabinet resonances. It features automatic standby operation, an 18 dB/octave low-pass filter, preset THX low-pass mode, high-pass inputs and outputs as well as line level inputs and outputs. An absolute phase switch and front panel level control make the 372 PBM very easy to use and set up.