Lectrosonics WM - Quick Start Guide - Manual (Page 7)

www.lectrosonics.com 7
LF Roll-off and Gain
The Audio screen will appear after the boot sequence into the normal mode. When
turned on into the “standby” mode, rf OFF will appear on the display and pressing the
AUDIO button will switch to the Audio screen.
The Audio screen is used to adjust input gain from 0 to +44 dB, and the low frequency
roll-off from 35 to 150 Hz. Each time the AUDIO button is pressed, the display will
switch back and forth between the two screens. Press and hold the AUDIO button and
use the UP and DOWN arrows to make adjustments.
Adjusting the Low Frequency Roll-off
I t is possible that the low frequency roll-off point could affect the gain
setting, so it’s generally good practice to make this adjustment before
adjusting the input gain. Press and hold the AUDIO button while
selecting the desired roll-off frequency with the UP and DOWN arrows. The roll-off
frequency can be set to 35, 50, 70, 100, 120 and 150 Hz.
Adjusting Audio Level (Gain)
The audio input level (gain) can be adjusted with the unit in the
“standby” mode or while powered up in normal operation. The control
panel Modulation LEDs indicate the audio level and limiter activity.
Once set, the transmitter’s audio level setting should not be used to control the volume
of your sound system or recorder levels. This gain adjustment matches the transmitter
gain with the microphone’s output level, the user’s voice level and the position of the
microphone.
It is desirable to set the gain so that some limiting occurs on louder peaks. The limiter
is very transparent and it’s effect is not audible until the system is close to overload. In
other words, don’t be shy about turning up the gain. In fact, it is a good idea to turn the
gain up to maximum and listen for distortion or compression to get a feel for how much
headroom the system actually has.
Signal Level 20 LED -10 LED
Less than -20 dB Off Off
-20 dB to -10 dB Green Off
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 db Red Red
Note: Different voices will usually require different gain settings, so check this adjustment
as each new person uses the system. If several different people will be using the transmitter
and there is not time to make the adjustment for each individual, adjust it for the loudest
voice.