10
Speech Project Switch
The speech project switch allows the user to customize the
sound output of the Liberty Xtreme for a particular
application:
Standard setting (button out):
Liberty Xtreme provides flat, full-range frequency response
for music/singing or indoor vocal applications.
Speech Project setting (button in):
Frequencies in the vocal range (800Hz-12KHz) are boosted
for added clarity and efficient projection. Use for outdoor
functions, large crowds and speech applications.
12 Volt DC Output
The DC output jack is used to power
auxiliary equipment such as an outboard
wireless receiver or Anchor’s Mini-Mix.
It’s rated output is 12 volts DC, 300 ma
maximum.
Using the cassette tape player
The cassette player features auto reverse for continuous
playback. The audio signal is fed directly into the mixing bus
so the sound can be mixed with other inputs of the Liberty.
Note: Use only high-quality tapes, and periodically clean the tape
head with a cleaning kit.
Operation
Set-Up
the second system. Set the volume on the second
system, and thereafter the volume of the primary
Liberty Xtreme will control both units.
Setting up difficult rooms
Reverberant rooms—those with acoustically-reflective
surfaces like glass or concrete (such as a gymnasium), can be
troublesome when using a sound system. Proper care must
be used during setup to minimize feedback, which is caused
by the microphone ‘hearing’ the sound reflected back from
the walls, floors and ceilings.
Techniques to reduce feedback in difficult rooms:
•
The best microphones to use in feedback-prone rooms
are handheld, CollarMic
™
or headset boom types. They
allow the mic element to be close to the mouth so the
system ‘sees’ more of the user’s voice and less of the
room. The volume control can be turned down while
still maintaining an adequate sound level—another
important factor in reducing feedback.
•
Orienting the speakers directly at the crowd and away
from the walls (and the user, or course) will help
reduce feedback. Experimentation may be necessary.
second system
primary system
third system
A lapel mic will
perform poorly
under these
conditions and
should not be
considered.
7
12 VDC Out
(300 ma MAX)
+12 VDC
AUTO REVERSE CASSETTE
EJECT
TAPE
VOLUME
To change tracks
(sides), push
button half-way in.
To eject tape, push
button fully in.
off
on
To control
feedback, try
attenuating the
bass or treble
control.
100-82-0/A, X50 2/6/01 9:58 AM Page 13
