ENGLISH
ENGLISH
ADJUSTING TRANSMITTER AUDIO GAIN LEVEL (FIGURE 47)
The transmitter audio gain level has been factory pre-set to provide satisfactory
output in most applications. However, for loud singers or high-output musical instru-
ments, the preset level may be too high, as indicated by constant glow of the red au-
dio level LED. Soft-spoken talkers or singers may find that the factory setting is too
low, as indicated by the failure of the amber audio level LED to glow at all.
To adjust audio gain, open the battery compartment and locate the transmitter au-
dio gain control. Use the supplied screwdriver to make adjustments.
FIGURE 47
INCREASE
GAIN
DECREASE
GAIN
INCREASE
GAIN
DECREASE
GAIN
S
For
high sound pressure level applications, such as loud singing or playing,
decrease audio gain level by rotating the gain control counterclockwise
(while the microphone is in use) until the red audio level LEDs on the receiv-
er flickers during the loudest sounds.
S
For
low sound pressure level applications, such as soft singing or playing,
increase audio gain level by rotating the gain control clockwise until the red
audio level LEDs on the receiver flickers during the loudest sounds.
NOTE: For guitar applications, the minimum setting (full counterclockwise) is rec-
ommended.
If you are using the Shure WH10TQG headset, rotate the gain control to the full
clockwise position. Then, if necessary, rotate it back slightly.
ADJUSTING TRANSMITTER AUDIO INPUT LEVEL (FIGURE 48)
NOTE: The factory-preset (–6 dB) should match most applications. Before chang-
ing the audio input level, try adjusting the transmitter gain (see Figure 47).
The U1 body-pack transmitter has an attenuator switch that allows you to set the au-
dio input level for different types of applications. Use one of the following three set-
tings according to the type of input source you are using:
•
0 dB (fully counterclockwise) is for low-output microphones, such as those in
headsets.
•
–6 dB (center) is the factory-preset position; it should accommodate most vocal
and instrumental applications.
•
–20 dB (fully clockwise) is for extremely high-output instruments, such as electric
guitars with active electronics.
To change the audio input level, re-position the attenuator switch using the following
steps :
1. Remove the belt clip from the back of the transmitter by carefully prying the wire
bracket, one side at a time, from the sides of the transmitter. Removing the clip
will reveal an access hole in the back of the transmitter.
Attenuator
access
Clip sockets
Decrease
input level
Increase
input level
2. Use the supplied 1.6 mm (
1
/
16
in.) flat blade screwdriver to turn the
Attenuator con-
trol fully clockwise (–20 dB), fully counterclockwise (0 dB), or center (–6 dB). In
the center detent position, the screw slot is horizontal when the transmitter is up-
right.
3. Readjust the
Gain pot so the red “Audio”
LED
on the U4 receiver flickers only oc-
casionally at the strongest peaks during a performance (see Figure 47).
4. Orient the belt clip so that “Shure” is on the outside and toward the top (antenna
side) of the transmitter. Carefully reinsert the clip’s wire bracket, one side at a time,
into the body of the transmitter.
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