Extron electronics VoiceLift Installation Manual page 41

2. Set the microphone gain and feedback
suppressor (FBS) (continued).
b.
Instructor: Place the lanyard with the
pendant microphone around your neck
and adjust the lanyard by sliding it through
the lanyard lock until the microphone is
approximately 4 inches (10.2 cm) below your
chin (see figure
Ö
Student: Hold the pendant or handheld
microphone approximately 4 inches (10.2 cm)
from your mouth.
c. Turn off all program audio sources.
d.
Lower the microphone input gain on the
PoleVault switcher to minimum by turning the
encoder counterclockwise two full rotations.
e. Raise the volume on the VoiceLift microphone
to maximum by pressing and holding the
Volume Up button until the microphone stops
beeping.
f. Slowly raise the microphone gain level
on the PVS switcher while talking into the
microphone until feedback occurs. One click
of the encoder is 1 dB. The dynamic filters
begin to engage and to eliminate feedback. If
the feedback persists, lower the microphone
gain on the switcher until the feedback stops.
g.
To set additional filters, walk around the
room while talking into the microphone. If the
feedback persists, lower the microphone gain
on the switcher and walk around the room
again.
NOTE: The highest gain achieved without
feedback is the maximum gain for the
VoiceLift system.
).
VoiceLift System with PVS 405D Installation Guide • Installation — Stage 5
~ 4 inches (10.2 mm)
Instructor: Place the microphone on the
Ö
lanyard and adjust it.
AUDIO LEVEL ADJUST
PEAK PEAK
INPUT VOICELIFT
NORMAL NORMAL
SIGNAL SIGNAL
Turn the encoder
counterclockwise.
Lower the input gain on the PoleVault
Ø
switcher.
Volume Up
Volume Down
– Volume Up and Down buttons on the
Ù Ú
VoiceLift microphone.
Breakaway
Clasp
Lanyard
Lock
Lanyard
PVS 405D
POLEVAULT SWITCHER
PAGING
SENSOR
SENSITIVITY
Volume Up
A B
VOLUME
Volume Down
35