7
Portable Wireless Sound System
Rio Rancho, NM – USA
7)
Position the microphone on your person in the location it will be during actual operation. If you are using the
headset microphone, turn the white knob on the headset fully clockwise (maximum). The microphone should be
within 3 inches of the mouth to minimize the possibility of “feedback.” If the headset mic is being used, position the
mic element at the corner of the mouth and rotate the white volume control knob fully clockwise.
8)
A small screwdriver is supplied with the transmitter. The screwdriver is used to adjust the audio gain of the
transmitter to match your microphone and your voice. The adjustment is made while observing the MOD LEVEL
lamps on the LONG RANGER III control panel:
a)
Speak at the voice level you will be using during actual operation.
b)
While speaking, adjust the transmitter gain with the screwdriver until the green MOD LEVEL lamp on the Long
Ranger III control panel is lighted or flickers and the red MOD LEVEL lamp blinks only on the loudest words.
Raise and lower your voice while observing the lamps. The red lamp should blink occasionally.
9)
You may now adjust the WIRELESS MICROPHONE VOLUME control on the control panel to a level where
everyone can hear. You will probably have to do this in several steps. If you attempt to adjust the volume yourself
while standing and transmitting just behind the unit, you will likely have a “feedback” problem. It is convenient to
have another person adjust the volume while you transmit from a position 20 feet or more behind the unit.
REMEMBER--the transmitter gain control is used only to adjust for proper MOD LEVEL lamp indications. DO NOT
use it to adjust the output volume of the LONG RANGER III speaker. Different voices and different microphones will
usually require readjustment of the transmitter gain control, so check the adjustment frequently. If several different
people will be using the system and there is not time to make the adjustment for each individual, adjust it for the
loudest voice.
GREEN LED
RED LED
OFF
RF
12V DC
OUTPUT
CHA
LAMP
CH-40
CHARGE
POWER
AUX IN/O
WIRELESS
MICROPHONE
VOLUME
MOD
LEVEL
M175 Transmitter
While speaking, Adjust the
transmitter as you observe
the LEDs on the receiver.
Figure 3 - Transmitter Gain Adjustment