Nady Systems U-41 QUAD Owner's manual - page 5
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Receiver Volume Controls Adjust
The volume controls work only for the 1⁄4” sum (MIX) output. Turn
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 amplifier or mixer is set at their usual levels. At full gain, the system gain
is approximately +20 dB 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 U-41 QUAD receiver is connected.
Level Trim Adjust
For optimum performance, an
INPUT SELECT SWITCH (38)
is provided. Select the switch for
either LO or HI gain setting according to your microphone use. Depending on the average distance
between vocalist’s mouth and microphone, you can adjust the level for your application. The fac-
tory setting is LO for hardwire dynamic microphone. This is a setting to be used in most typical
close microphone applications. Set for maximum possible gain and headroom without noticeable
distortion of the high level peaks. Experiment and set for maximum possible gain without audible
distortion on the high level peaks.
(Note: Selecting LO gain setting if the input signal is already low
can compromise the signal-to-noise ratio and it is not recommended if the vocalist’s mouth is far
from the microphone.)
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 (36)
to the ON position and turn on the attached microphone’s mute switch
if it was off. Adjust the volume of the receiver as outlined in the Receiver Operating Instructions:
Connecting Audio Outputs.
Notes:
• Observe care in selecting PA volume, transmitter location and speaker placement so that acoustic
feedback (howling or screeching) will be avoided.
LINK-4™ SNAP-ON TRANSMITTER
5
U-41 QUAD RECEIVER
The U-41 QUAD also has a summed adjustable line level unbalanced output for all channels (MIX).
To use, just plug an audio cable with a 1⁄4” mono plug into the MIX out and plug the other end into
your mixing board or PA. Adjust each channel’s
VOLUME CONTROL (5)
up or down so that no
audio distortion is present when the mixer or PA is set to usual levels.
Your U-41QUAD is now operational and ready to use. Now that you have completed the above
step, proceed to instructions for the UH-4 or UB-4 transmitter included with your system.
Additional Features — Tone Squelch™
The U-41 QUAD receiver and transmitters feature Nady’s Tone Squelch™ circuit. Nady now offers
Tone Squelch™ for professional uses to protect against RF interference during recording, perfor-
mance, or presentation.
The receiver detects a specific tone code signal from your transmitter, which unlocks your receiver’s
audio. In this manner only your own transmitter’s signal can be heard. (The receiver has an internal
Tone Squelch defeat feature. Contact your Nady dealer or Nady Systems Customer Service for
details.)
This feature is ideal for situations when the transmitter is turned on or off during use. With Tone
Squelch™, an unwanted signal on the same operating frequency will be muted out even if the re-
ceiver is left on with the transmitter(s) off. Thus Tone Squelch™ prevents pops or disruptive noises
from entering your sound system.
Note:
• Noise from unused channels is normal and does not indicate a defective channel. This noise is
caused by the mixing of RF waves.
• To prevent possible undesired noise from unused channels during use, keep the volume controls
of unused channels turned off in the mixer or PA.. The audio should only be “live” if the transmitter
is on.
• When making any connection, make sure the mixing board or PA volume is minimum before plug-
ging in the receiver to avoid possible sound system damage.
• Only one transmitter can be used with one receiver. It is not possible to use two transmitters on
the same frequency. The U-41 QUAD receiver has 4 discrete receivers built in so it can be used
with 4 transmitters.
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