Yamaha YST-SW215 manual 20

ADJUSTING THE SUBWOOFER BEFORE USE

Frequency characteristics

This subwoofer’s frequency characteristics

<YST-SW315>							<YST-SW215>
dB							dB
			HIGH CUT 40 Hz							HIGH CUT 90 Hz
90				HIGH CUT 90 Hz			90
												HIGH CUT 140		Hz
					HIGH CUT 140 Hz
80							80
70							70
60							60
								HIGH CUT 40 Hz
50							50
40							40
20	50	100			200	500Hz	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 main speaker system.

■EX.1 When combined with a 4” or 5” (10 cm or 13 cm) acoustic suspension, 2 way system main

speakers

<YST-SW315>

PHASE : Set to the REV(reverse) position

<YST-SW215>

dB
90
80
			YST-SW315
70
60	Main			PHASE :
	speaker
				Set to the
50
				REV(reverse) position
40
20	50	100	200	500Hz

dB

90

80YST-SW215

70

60Main

speaker

50

40
20	50	100	200	500Hz

■EX.2 When combined with an 8” or 10” (20 cm or 25 cm) acoustic suspension, 2 way system main speakers

<YST-SW315>

<YST-SW215>

dB

90

dB

PHASE :

Set to the REV(reverse) position

80
70		YST-SW315
60	Main	PHASE :
		Set to the
	speaker
		REV(reverse) position
50
40

90

80

70

60

50

YST-SW215

Main

speaker

20 50 100 200 500Hz

40
20	50	100	200	500Hz

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