Polycom SoundStation VTX1000 Configuration Manual page 3

CONFIGURING THE SOUNDSTATION VTX1000 FOR AUDITORIUM USE
c. TURN OFF THE INTERNAL MICS. Through the keyboard interface, (MENU ->
AUDIO SETUP -> CONSOLE MICS), turn the console mics OFF (again, press
SAVE!).
d. TURN OFF THE INTERNAL SPEAKER. Through the keyboard interface, (MENU
-> AUDIO SETUP -> CONSOLE SPEAKER), turn the console speaker OFF.
e CONNECT THE EXTERNAL MICROPHONE.
i. Connect the talker's microphone to AUX IN. This will commonly be
done through the room mixer panel. The connection to AUX IN is usually
made through a direct box. AUX IN is a line-level unbalanced signal,
appearing on a phono-style connector on the Palomod (the rectangular grey
box that is connected between the triangular console and the telco and
power jacks at the wall).
ii. Set the mixer to "solo" the talker's mic to AUX IN. That is, only the
talker's mic should be present at AUX IN. Room audio, or any other signal,
should not be present here.
f. CONNECT THE EXTERNAL SPEAKER. Connect AUX OUT to the auditorium PA
system. This is normally done through another direct box to the auditorium mixer
panel. The auditorium mixer can combine this VTX output with the presenter's
microphone, and other sound sources as desired. When set to "EXT SPEAKER" as
described above, AUX OUT will carry audio from the far end, as well as dialtone,
ring tones, and so on. AUX OUT is a phono jack carrying a line-level unbalanced
signal.
g. SET CONSOLE VOLUME. Set console VOUME to maximum. This gives the
lowest noise level, and you will use your mixer to adjust the level from the room
speakers.
2. ADJUST THE AUDITORIUM AUDIO
The VTX 1000 is much more sensitive to feedback than a
Here's what to listen for: if you have this problem, you won't hear it as feedback
oscillation. Instead, the VTX 1000 will partially gate the far end, and you'll hear the
loudness from the far end flipping up and down.
Polycom, Inc.
WARNING!
IT IS CRITICAL TO MINIMIZE MIC PICKUP.
normal sound system, so:
KEEP GAINS LOW!
DON'T CHANGE THE GAINS DURING USE!
TALKER, STAND AWAY FROM ROOM SPEAKERS!
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