Lectrosonics UT300VM - Manual (Page 9)

Frequency Agile Handheld Transmitter, Euro Model
too late. To solve this problem, the VariMic has a low frequency filter that is so sharp that it can remove low frequency
noise without affecting any wanted vocals. It consists of a 36 dB per octave filter circuit to sharply remove low fre­
quency noise below 75 Hz without affecting vocal fundamentals. The lowest operatic bass voice fundamental is 82 Hz.
Attenuator
The VariMic head includes an attenuator to provide an additional 15dB of head­
room when needed. The attenuator should only be used when the normal Audio
Level control in the battery compartment is already turned down as far as it will
go and the user’s voice still drives the transmitter into hard limiting.
The attenuator control is a 16-position switch marked 0 through F. Rotating the
control clockwise increases the audio level. Rotating it counter-clockwise re­
duces the audio level (increased attenuation).
“F” is minimum attenuation for normal use.
“0” is maximum attenuation for use with extremely loud voices.
Intermediate settings are selected according to the LEDs in the battery compart­
ment. To correctly set the attenuator, simulate the actual voice level that will be
used and adjust the switch so that some limiting occurs during louder passages.
The Limit LED should flicker during use, and may also light solidly during very
loud peaks. The audio circuitry provides 30dB of headroom above the limit LED,
so it is difficult to actually overload the input.
ATTENUATOR
NOTE: The attenuator should not be used as a
level control. The Audio Level control inside the
battery compartment is the main level control.
Adjust this attenuator only when the Audio Level
control is turned completely down and more
headroom is still needed. Be sure to set the
attenuator back to its original setting (“F”) for
normal operation.
Rio Rancho, NM - USA 9