Yamaha YST-SW325 Owner's Manual - Page 17

ADJUSTING THE SUBWOOFER BEFORE USE Frequency characteristics This subwoofer's frequency characteristics dB HIGH CUT 90 Hz 90 HIGH CUT 150 Hz 80 70 60 HIGH CUT 50 Hz 50 40 20 50 100 200 500Hz Frequency response graph* The figures below show the optimum adjustment of each control and the frequency characteristics when this subwoofer is combined with a typical front speaker system. ■ EX.1 When combined with a 4" or 5" (10 cm or 13 cm) acoustic suspension, 2 way system front speakers If you are using NS-325F speakers as front speakers, use the following example as a reference when adjusting settings. dB PHASE 90 NORM REV 80 YST-SW325 (90Hz) (REV) 70 60 Front speaker 50 40 20 50 100 200 500Hz Frequency response graph* ■ EX.2 When combined with an 8" or 10" (20 cm or 25 cm) acoustic suspension, 2 way system front speakers (70Hz) PHASE NORM REV (REV) dB 90 80 YST-SW325 70 60 Front speaker 50 40 20 50 100 200 500Hz Frequency response graph* *This diagram does not depict actual frequency response characteristics accurately. 13