Nady Systems U-41 QUAD Owner's manual - page 8
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UB-4 BODYPACK TRANSMITTER
The UB-4 is equipped with two
INPUT
SELECTOR SWITCHES (27)
located under the
cover on the circuit board for selecting the type of audio input you will be supplying
to the transmitter. Select from the choice of three positions: INSTRUMENT (for guitar,
bass, etc.)/ HEADWORN MIC/ LAVALIER MIC. (G/H/L).
There are two switches, one with selectable position G, H, L and the other with G, HL.
To select inputs: (see chart on page 10)
A. Instrument — both switches to “G”
B. Headworn Mic — set one switch to “H” and the other to “H”
C. Lavalier Mic — set one switch to “L” and the other to “L”
Microphone Operation
To turn it on, slide the
OFF/STANDBY/ON SWITCH (28)
to the STANDBY position first (transmitter
on, audio muted) or the ON position (transmitter and audio both on). The
LOW BAT LED (29)
will
give a single flash, indicating usable battery strength. In case of a dead or low battery, both LEDs
will either not go on at all or will stay on continuously. During use, if the
LOW BAT LED (29)
stays
on continuously, the battery should be replaced with a fresh one. To preserve battery life, turn the
transmitter off when not in use.
To turn off, slide the
OFF/STANDBY/ON SWITCH (28)
to OFF position. No LEDs will light up. The
unit is now off.
Receiver Volume Controls Adjust
The volume controls adjust only the 1⁄4” sum (MIX) outputs. Turn the
VOLUME CONTROLS (5)
on the U-41 QUAD receiver clockwise to near full gain. Adjust Volume up or down so that no audio
distortion is present when the amplifier or mixer is set at their usual levels. At full gain, the system
gain is approximately +20dB higher than a direct line to amp connection.
If the fixed level XLR outputs are used, the volume level of each receiver should be adjusted by the
mixer to which the UHF-24 receiver is connected.
Level Trim Adjust
For optimum performance, an input level control for LT/HM is provided. Adjust the microphone gain
by inserting a small slot-headed screwdriver to the adjustment knob, located on the topside of the
transmitter unit, next to the mic input jack. 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 recom-
mended.)
The microphone is now ready to use. The
TX ON LED (7)
on the corresponding receiver should
now be on, indicating a received signal from the transmitter. When ready to speak, slide the
OFF/
STANDBY/ON SWITCH (28
) to the ON position. Adjust the volume of the receiver as outlined in the
Receiver Operating Instructions: Connecting Audio Outputs.
Note:
• The microphone has an external flexible wire antenna. For proper operation, it should not be
covered or touched during operation.
• Observe care in selecting PA volume, transmitter location and speaker placement so that acoustic
feedback (howling or screeching) will be avoided.
8
UH-4 HANDHELD TRANSMITTER
Transmitters set up
The UB-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
snap open the
BATTERY DOOR COVER (21
), exposing the
BATTERY HOLDER (22)
. Insert a
fresh 9V battery according to the correct polarity as indicated on the transmitter body. Snap the
cover back onto the bodypack. Make sure the cover is secured completely. Fresh alkaline batteries
can last up to 10 hours of operation, but in order to ensure optimum performance, it is recommend-
ed that the batteries should be replaced after 6-8 hours of use.
Input Connection and Input Selector Switches
The UB-4 is provided with a
3.5MM LOCKING JACK (23)
for connecting the audio input selected.
Connect either the
INSTRUMENT CORD (24
), or the
HEADWORN MIC (25)
, or
LAVALIER MIC
(26)
as desired, according to the input selected.
(Note: Use only the input audio source as per the
input selected with the internal Input Selector Switch or the audio will not be optimal- a muddy or
distorted sound may result.)
To secure the connection, turn the slip ring on the plug clockwise to
thread it on the jack. To unplug, reverse the process. Slip the transmitter into a pocket or clip it onto
you cloth or instrument strap (if using the UB-4 as an instrument transmitter.)
UB-4 BODYPACK TRANSMITTER
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