UH-4 HANDHELD TRANSMITTER
transmitters set up
The UH-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
unscrew the
BAtteRy CoveR (16)
with a counter-clockwise turn and remove the cover, exposing
the
BAtteRy holdeR (17)
. Insert a fresh 9V battery according to the correct polarity as indicated
on the transmitter body. Screw the battery cover back onto the microphone. Make sure the cover is
screwed on completely. Fresh alkaline batteries can last for up to 10 hours of operation, but in order
to ensure optimum performance, it is recommended that the batteries should be replaced after 6-8
hours of use.
transmitter operation
To turn transmitter on, slide the
oFF/stAndBy/on swItCh (18)
to the STANDBY position first
(transmitter on, audio muted) or the ON position (transmitter and audio both on). The
low BAt
led (19)
will give a single flash, indicating usable battery strength. In case of dead or low battery,
the LED will either not go on at all or will stay on continuously. During use, if the low battery/
LED stays on continuously, it is indicating that the battery should be replaced with a fresh one.
To preserve battery life, turn the transmitter off when not in use.
Receiver volume Controls Adjust
The volume controls work only for the 1⁄4” sum output (MIX). Turn the corresponding
volUme
ContRols (5)
on U-41 QUAD UHF receiver being used clockwise to near full gain. Adjust
Volume up or down so that no audio distortion is present when amplifier or mixer is set at their
usual levels. At full gain, the system gain for HT is approxi20dB higher than a direct line to
amp connection. If the fixed level
XlR oUtPUts (10)
are used, the volume level of each receiver
should be adjusted by the mixer to which the U-41 QUAD UHF receiver is connected.
The microphone is ready to use. The corresponding TX LED indicator on the U-41 QUAD UHF
receiver should now be lit.
level trim Adjust
For optimum performance, an
InPUt level ContRol (20)
is provided for the transmitter.
Adjust the microphone gain by inserting a small slot-headed screwdriver through the adjustment
hole, located on the topside of the battery compartment, under the compartment cover. Factory
setting is 1⁄2 full. This is a setting to be used in most typical close microphone applications.
Depending on the average distance between vocalist’s mouth and microphone, you can adjust
the level for your application. Set for maximum possible gain and headroom without noticeable
distortion of the high level peaks. It is recommended that the level be set at about 1⁄2 maximum.
Experiment and set for maximum possible gain without audible distortion on the high level peaks.
(Note: Turning down the gain too much can compromise the signal-to-noise and it is not
recommended.)
The transmitter is now ready to use. The TX LED indicator on the corresponding receiver should
now be on, indicating a received signal from the transmitter. When ready to speak, slide the
switch to the ON position. Adjust the volume of the receiver as outlined in the
Receiver Operating
Instructions section: Connecting Audio Outputs
.
Notes:
• The battery compartment on the UH-4 functions as a built-in antenna. For proper operation,
it should not be covered by the hand or touched during operation.
• Observe care in selecting P.A. volume, transmitter location and speaker placement so that
acoustic feedback (howling or screeching) will be avoided.
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