The MP418SP is a compact, powered, single 18 inch, bass-reflex subwoofer system. Designed for portable applications, the MP418SP includes heavy-duty, 3 inch casters and ergonomically positioned steel carry handles to facilitate transport. A dual-channel Crown amplifier with signal processing is incorporated into the system. While one amplifier channel (the "Internal" channel) is dedicated to powering the internal 18" VGC woofer, the other channel (the "External" channel) may be used in one of two ways:
In the "Sub + Sat" mode, an MP418SP may be used with a fullrange, passive speaker for a single channel, two piece system. The external amplifier channel powers the satellite.
In the "Sub + Sub" mode, the external amplifier channel is used to drive the MP418S (a passive version of the MP418SP). Stereo, high-passed line-outputs are provided to drive powered satellite speakers or an external amplifier / speaker system.