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Operation - Technics SB-AS40 Operating Instructions Manual

Active subwoofer system

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Operation
Set the low pass filter, volume and phase to suit characteristics
of the front speaker and SB-AS40 combination.
1
Set POWER to the "ON" position.
(The POWER indicator will light up green.)
2
Set LOW PASS FILTER to a suitable frequen¬
cy, referring to the frequency response by
LOW PASS FILTER setting on the right.
3
Set VOLUME to a suitable level, referring to
the frequency response by VOLUME setting
on the right.
4
Listen to some music and set PHASE to
"NOM" or "REV", whichever makes playback
normal.
NOTE:
If active subwoofer and speaker phase are the inverse of one
another, they will tend to rub each other out. Playback will
not be normal and sounds will seem muffled.
About the POWER indicator
This unit will automatically go on standby (indicator turns red), if no
signal is sent within (approximately) 10 minutes from the moment you
turn ON the power.
Once the signal is received, this unit starts working normally (indica¬
tor turns green).
Frequency response by LOW PASS FILTER setting
Frequency response by VOLUME setting

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