MM-10ACX Subwoofer
In this section:

The MM-10ACX model includes onboard DC power and audio routing for driving a pair of MM-4XP miniature loudspeakers, effectively placing the MM-10ACX at the heart of an extremely capable compact, full-range loudspeaker system.
Three XLR female inputs are included for receiving audio for the subwoofer and two satellite loudspeakers. The MM-10ACX is available with either Phoenix 5-Pin male or EN3 5-pin female satellite outputs. A two-channel stereo signal can be patched to the satellite inputs and summed and routed to the subwoofer if necessary.