the box Miniray Slave Sub, active slave subwoofer for the Miniray system, power output Subwoofer: 400 W RMS, 800 W Peak, Frequency Response Subwoofer: 48 - 180 Hz Adjustable low pass filter: 80-180 Hz, switchable 180° phase, XLR/Jack combo input, XLR male out, mono slave subwoofer for extension of the miniray system, SPL Subwoofer: 96 dB (122 dB max.) : 345mm x 470mm x 490mm weight: 19 kg