– 2-way passive separate system – 6.5″ woofers ( GZCK 165XSPL ) – 1″ tweeters ( GZCT 25SQL ) – passive crossovers ( GZCX 165/200.2SQL ) – frequency response 50 – 20 000 Hz – cutoff frequency 4500 Hz ( 12 dB/oct ) – sensitivity 94 dB – power handling 160 W RMS / 300 W Peak – woofer mounting depth 72 mm – woofer mounting diameter 145 mm.