Yamaha YST-SW515 Owner's Manual - Page 17

ADJUSTING THE SUBWOOFER BEFORE USE Frequency characteristics This subwoofer's frequency characteristics dB HIGH CUT 40 Hz HIGH CUT 90 Hz 90 HIGH CUT 140 Hz 80 70 60 50 40 20 50 100 200 500Hz 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 (70Hz) PHASE NORM REV (REV) dB 90 80 YST-SW515 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 (50Hz) PHASE NORM REV (REV) dB 90 80 YST-SW515 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