Shure UNF Wireless system Manual page 13

ENGLISH
RECEIVER VOLUME ADJUSTMENT FOR THE GUITARIST-UHF
Follow these directions to adjust the volume control of the UT4 receiver, so that the
wireless output of an instrument is equivalent to the output of a cabled instrument.
1. Plug instrument directly into guitar/bass amp. Set volume and tone controls on
both the instrument and amplifier for a clean signal with desired tonal quality and
volume. DO NOT change these settings for the rest of volume adjustment.
2. Unplug instrument from the amplifier input and plug into the transmitter. Plug the
receiver into amplifier input.
3. Set VOLUME control of receiver at
force to cause maximum output.
4. If there is distortion present, the transmitter may be clipping. See the Transmitter
Audio Gain Adjustment section.
5. Adjust receiver volume control until sound quality matches that achieved in step 1.
TRANSMITTER AUDIO GAIN ADJUSTMENT
The audio gain control on both the UT1 body-pack and UT2 hand-held transmitters
has been factory-preset at the mid-range position for best performance in most ap-
plications. If the red AUDIO PEAK light on the receiver does not flicker, the preset
gain level may be too low and the audio gain may need to be increased until a proper
signal-to-noise ratio is reached. This may be necessary for soft singers or talkers, or gui-
tar or basses with low outputs.
For loud singers or talkers, or instruments with high outputs, the preset gain level
may be too high, causing unwanted distortion. This condition is indicated by the con-
tinuous glow of the red PEAK light on the receiver during usage.
UT1 BODY-PACK TRANSMITTER
To Increase Gain: Rotate the transmitter gain control clockwise with the sup-
plied screwdriver until the red AUDIO PEAK light on the receiver flickers when
the guitar is played loudly or when you sing or speak in a loud voice. NOTE: In
some applications, the red AUDIO PEAK light will not flicker even with the gain
control turned fully clockwise. For body-pack systems only: If gain control is ro-
tated fully clockwise and the AUDIO PEAK light still does not flicker, check to
see if the input attenuation switch on the transmitter is set to the –20 dB position.
If it is, fully rotate the gain control counterclockwise, and move the switch to the 0
dB position. Then rotate the gain control clockwise until the AUDIO PEAK light
flickers during high output or the gain control is turned fully clockwise.
To Reduce Gain: Rotate the transmitter gain control counterclockwise with the sup-
plied screwdriver. Continue rotating the gain control until the red AUDIO PEAK light
on the receiver only flickers when guitar is played loudly, or when you sing or speak
in a loud voice. For body-pack systems only: If gain control is rotated fully counter-
clockwise and the AUDIO PEAK light still glows continuously, check to see if the input
attenuation switch on the transmitter is set to the 0 dB position. If it is, move the
switch to the –20 dB position, and fully rotate the gain control clockwise. Then rotate
the gain control counterclockwise until the AUDIO PEAK light flickers during high out-
put.
1
/ on (9:00). Play instrument, with enough
4
UT2 HAND-HELD TRANSMITTER
FIGURE 12
12