The 223s from dbx is a dual channel, stereo 2-way or mono 3-way crossover. A crossover is essential for efficient PA operation because it filters the full band input signal into specific frequencies that match a speaker's optimum frequency-reproduction range. This leaves the amplifier free to use its full power on the usable signal, eliminating distortion and delivering clear sound. The unit features Linkwitz-Riley 24dB per octave filters, independent output gain controls for level matching, output phase inversion, 40Hz low cut filter, and optional mono summing of the low frequency (subwoofer) output. Quality components and meticulous attention to detail offers exceptional sound and rugged reliability, while exuding great precision from the solid "click" controls to the high quality XLR inputs and outputs. Features Stereo 2-way, mono 3-way crossover Mode switch for stereo 2-way or mono 3-way operation 24dB per octave Linkwitz-Riley filters Low frequency summed (subwoofer) output Range switch on both channels (x10) 40Hz high-pass (low-cut) filter on both channels Phase reverse switch on all outputs Individual level controls on all outputs Stereo/Mono status LEDs indicate the selected mode XLR balanced ins and outs CSA NRTL/C approved and CE compliant Specifications Filter Type Linkwitz-Riley, 24 dB/octave, state-variable Operating Modes Stereo 2-way, switchable to mono 3-way Crossover Frequencies Stereo Mode - Low/High: 45 to 960Hz or 450Hz to 9.6kHz (x10 setting)Mono Mode - Low/Mid: 45 to 960Hz or 450Hz to 9.6kHz (x10 setting)Mono Mode - Mid/High: 45 to 960Hz or 450Hz to 9.6kHz (x10 setting) Inputs 2 x XLR (pin 2 hot) Input Impedance 50kΩ balanced, 25kΩ unbalanced Maximum Input Level >+22dBu balanced or unbalanced Outputs 4 x XLR (pin 2 hot) Output Impedance 60Ω balanced, 30Ω unbalanced Maximum Output Level >+20dBu balanced/unbalanced into 600Ω or greater Frequency Response FR: 90kHz, +0/-3.0dBBandwidth: 20Hz to 20kHz, +0/-0.5dB Dynamic Range >106dB unweighted, any output Noise SNR ref: +4dBu, 22kHz measurement bandwidthStereo Mode:>94dB (low output)>91dB (high output)Mono Mode:>94dB (low output)>93dB (mid output)>91dB (high output) THD + N
