Sony STR-GX900ES - Manual (Page 10)

Hookups
(continued)
Connecting External Amplifiers
To obtain more powerful sound, connect an external power amplifier or a pre-amplifier.
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REAR SPEAKERS
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Power amplifier for
the rear speakers
1
Subwoofer
Monaural power
amplifier for a
center speaker
If you are connecting a subwoofer with a power
amplifier
Connect the line input jack of the subwoofer to the
SURROUND OUT MONO jack of this receiver.
If you are connecting a subwoofer without a power
amplifier
Connect it through a monaural power amplifier.
On the low cut filter for front speakers (Models for
U.S.A. and Canada only)
When using a subwoofer, the low frequency signal should be
cut from the front speakers for better sound reproduction.
To activate the low cut filter function, turn on the power
with the POWER switch while holding down the LOW
BOOST button. The low cut filter indicator on the front
panel lights up.
To cancel tlie low cut filter function, perform this procedure
a iia i n.
If you are connecting a power amplifier for the rear
speakers
Connect the input jacks of the power amplifier to the
SURROUND OUT REAR jacks of this receiver. Make sure
the POWER SWAP selector is set to NORMAL.
If you are connecting a monaural power amplifier
for the center speaker
Connect the input jack of the power amplifier to the
SURROUND CENTER jack of this receiver.
* To obtain more powerful sound from front and rear
speakers, you can use the POWER SWAP selector. The
total output power of your audio/video system will be
increased. See "Obtaining More Powerful Sound" on page
29.
10