Phonic's PCX4000 is the authentic soundman's crossover for front of house or monitoring systems in all applications – from studio to live environments. Featuring 24dB/octave, state-variable Linkwitz-Riley filters giving you absolute frequency separation. Flat summed amplitude response with zero phase difference. Independent IGC limiter per output and adjustable time delay for phase alignment between drivers with phase reverse switch. Switchable 25Hz subsonic filter; switchable EQ; Low Sum function; servo-balanced XLR connectors (2 in, 6 out).