Yamaha NS-SW700: ADJUSTING THE SUBWOOFER BEFORE USE

ADJUSTING THE SUBWOOFER BEFORE USE

Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer

and the front speakers by following the procedure described below.

1 Set the VOLUME control to minimum (0).

8 Select “MOVIE” or “MUSIC” according to the played

source.

2 Turn on the power of all the other components.

MOVIE:

3 Make sure that the POWER switch is set to the ON

When a movie type source is played, the low-

position, then press the STANDBY/ON button to turn

frequency effects are enhanced to allow listeners to

on the subwoofer.

enjoy more powerful sound. (The sound will be richer

* The Power indicator lights up in green.

and deeper.)

4 Play a source containing low-frequency components

MUSIC:

and adjust the amplifier’s volume control to the desired

When an ordinary music source is played, the

listening level.

excessive low-frequency components are cut off to

make the sound clearer. (The sound will be lighter to

5 Adjust the HIGH CUT control to the position where

reproduce the melody line more clearly.)

the desired response can be obtained.

Normally, set the control to a level a little higher than

Notes

the front speaker’s rated minimum reproducible

• Once the volume balance between the subwoofer and

frequency*.

the front speakers is adjusted, you can adjust the

* The front speaker’s rated minimum reproducible

volume of your entire sound system by using the

frequency can be looked up in the speakers’ catalog

amplifier’s volume control.

or owner’s manual.

However, if you change the front speakers to others,

you must make this adjustment again.

6 Increase the volume gradually to adjust the volume

• For adjusting the VOLUME control, the HIGH CUT

balance between the subwoofer and the front speakers.

Normally, set the control to a level where you can

control and the PHASE switch, refer to “Frequency

characteristics” on page 13.

obtain a little more bass effect than when the

subwoofer is not used. If the desired response cannot

be obtained, adjust the HIGH CUT control and the

VOLUME control again.

7 Set the PHASE switch to the position which gives you

the better bass sound.

Set the switch to the REV (reverse) position. If the

desired response cannot be obtained, set the switch to

the NORM (normal) position.

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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 10 cm (4”) or 13 cm (5”) acoustic suspension, 2-way system front speakers

dB

PHASE

90

REVNORM

80

70

(70Hz)

(REV)

60

Front

speaker

50

40

20 50 100 200 500Hz

Frequency response graph*

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

speakers

dB

PHASE

90

REVNORM

80

70

(50Hz) (REV)

60

Front

speaker

50

40

20 50 100 200 500Hz

Frequency response graph*

*This diagram does not depict actual frequency response characteristics.

English

13 En