Polycom VSX Series Administrator's Manual page 53

Setting the Volume for External Speakers
Connecting a Mixer and Powered Microphones
© Polycom, Inc.
Setting the volume too high or too low can interfere with echo cancellation.
To set the volume:
>> For best echo cancellation, set the external speaker system's volume control at
the level of normal speech.
To adjust the volume during calls, use the volume button on the remote
control.
You can connect several studio-type microphones to the VSX 8000 system through
an audio mixer, or you can connect two powered microphones directly to the
VSX 8000 system.
The VSX 8000 is designed to work with the Polycom Vortex mixer. For this configuration, you
need Vortex firmware 2.5.2 or later, Conference Composer™ version 2.7.0 or later, and VSX
system software version 7.5 or later.
To connect a Vortex mixer to the VSX 8000 system:
1. Connect the mixer's Line Out C to the balanced audio left channel input
(white) at the left end of the VSX 8000 system's rear panel.
2. Connect the mixer's Line In C to the balanced audio left channel (white)
output.
Connect the mixer's Line Out D to the balanced audio right channel input (red)
3.
at the left end of the VSX 8000 system's rear panel.
Connect the mixer's Line In D to the balanced audio right channel (red)
4.
output.
5. Connect the mixer's RS-232 port to one of the system's RS-232 ports.
Chapter 2 - Setting Up Your System Hardware
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