JBL SCS178 manual P H A S E, O P E R A T I O N, Volume, Crossover

O P E R A T I O N

P H A S E

Press the Master Power

not sense a signal

after

The Phase Control ™ determines

Switch (marked Power ¡) to

approximately twenty minutes,

whether the subwoofer’s piston-

the ON position to use the

it will automatically go into

like action moves in and out in

subwoofer. When your receiver

standby mode. If you will be

phase with the main speakers or

or amplifier is off, or is not

away from home for an

opposite the main speakers. This is

sending program material to

extended period of time, or if

adjusted by pressing the button to

the subwoofer, the subwoofer

the subwoofer will not be used,

the 0°, or 180° position. The 0°

will be in standby mode. When

switch the Master Power

position of the phase button plays

the subwoofer senses an audio

switch ¡ to the "OFF" position.

the bass signal in phase with the

signal, it will automatically turn

main speakers. The 180° position

itself on. If the subwoofer does

plays the bass signal 180º, or out of

phase with the main speakers.

¢

¡

£

Proper phase adjustment depends

on several variables such as

subwoofer

placement

and listener

position. Adjust the

phase switch to

optimize bass output

at the

™

listening position.

Every system, room and listener is

different. There are no right or

wrong settings. This switch offers

the added flexibility to adjust your

HIGH LEVEL

LINE LEVEL IN

subwoofer for optimum

+ L –

– R +

performance for your specific

OUT

L

0°

PHASE

180°

IN

LFE

listening conditions without having

R

to move your speakers. If at some

IMPORTANT:

CONNECT STRIPED WIRE TO

RED (+ ) SPEAKER TERMINAL.

time in the future you happen to

rearrange your listening room, and

move your speakers, you should

experiment with the phase switch

in both positions, and leave it in the

AC 230V~50Hz

position that optimizes bass

performance for your taste.

CAUTION

200 Watts

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Volume

Crossover

Volume can be adjusted using

The crossover filter between

optimum setting for the

the Subwoofer Volume Control

the subwoofer and satellites

SCS178 system is with the

£, as shown.

can be adjusted using the

Crossover Control ¢ set to

Crossover Control ¢. The

the "Min" position.

Subwoofer

Subwoofer

Level

Level

MIN MAX

MIN MAX

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