Nady Systems U-41 QUAD Owner's manual - page 3
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• The receiver antennas should be kept away from any metal surface.
• For optimum operation with external antennas use only low loss RF shielded cable no longer than
10’ (3m) in length.
• If the Volume Control of the receiver is set too high, it may over-drive the input of the mixer or PA,
causing distortion. Conversely, if the output is set too low, the overall signal-to-noise ratio of the
system may be reduced. Adjust the output level of the receiver such that highest sound pressure
level going into the microphone causes no input overload in the mixer or PA, and yet permits the
mixer level control to operate in the normal range (not too high and not too low). This provides the
optimum signal to noise for the entire system.
• Before inserting the batteries, please make sure that they are inserted according to the correct
polarity.
• Use only brand new alkaline batteries. Do not use “general purpose” carbon zinc batteries. When
the batteries are weak, replace all the batteries together at the same time.
• Position the receiver such that it has the least possible obstructions between it and the transmit-
ter. Line of sight is best!
• The transmitter and the receiver should be as close as possible for optimum performance, but
never less than 3’ (1 meter) as that can overload the RF input circuitry of the receiver and cause
reception problems for the other channels.
• For the best operation, the receiver should be placed at least 1 meter above the ground and 1
meter away from a wall or metal surfaces. The transmitter should be also at least 1 meter from the
receiver. Keep the receiver antennas away from noise source such as motors, automobiles, neon
light, signal processor, computer, as well as large metal objects.
• A receiver cannot receive signal from two or more transmitters simultaneously. The U-41 QUAD
has 4 receivers so can be operated with 4 transmitters if they’re on the same corresponding
frequencies.
• Turn the transmitter off when it is not in use. As batteries can leak over time, remove the them if
the transmitter is not to be used for a long period.
Note: Scratchy noises can sometime occur when some electric guitars with dirty pots or connec-
tions are used with any wireless system. Therefore, the capacitor internal to the 1⁄4” plug in the sup-
plied GT (instrument) cable provides first order filtering of the RF signal from the cord into the guitar
and eliminates virtually all scratchy noises. Should your equipment still give you scratchy noises,
we suggest these steps to eliminate them:
a. Make sure all guitar volume and tone pots are clean and all contacts are solid--this is very
important.
b. A 47pF capacitor soldered across the pot to ground terminal of the guitar’s volume and tone
pots will provide extra filtering as necessary.
TIPS
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SYSTEM FEATURES
U-41 QUAD Receiver
• Four discrete UHF wireless receivers in a single rugged 19” 1U, all-metal rack mount housing
• Back panel Balanced XLR mic level outputs, Unbalanced 1⁄4” jack line level sum output with sepa-
rate volumes, and external adjustable mute control for each channel
• Front panel LED display indicating TX on (single LED) and AF levels (5-segment bar graph) for
each channel, and dual removable antennas
• Nady’s exclusive patented companding circuitry and highest quality audio for an unsurpassed
UHF performance with 120dB dynamic range
•
Operates on select UHF frequencies within separate bands 902-928 and 944-952 MHz
• Tone Squelch circuitry for protection from RF interference
• Externally powered with DC adapter included (16.5VDC/0.4A)
UH-4 Handheld Microphone Transmitter
• Nady DM-10D neodymium cartridge delivers transparent vocals, maximum feedback rejection and
minimal handling noise
• OFF/MUTE/ON switch for ease of use
• Unique screw-on battery compartment for quick pop-in battery replacement — uses standard 9V
alkaline battery
• POWER and LOW BAT LED indicators
• Input level control for optimum sound adjustment
• Rugged ABS housing with integral antenna
UB-4 Bodypack Transmitter
• Compact bodypack with locking jack for lavalier microphone
• OFF/MUTE/ON switch for ease of use
• Unique sliding battery compartment for quick pop-in battery replacement — uses standard 9V
alkaline battery
• POWER and LOW BAT LED indicators
• Input level control for optimum sound adjustment, LT (lavalier mic) and HM (headmic) modes
• Rugged ABS housing with external antenna
LINK 4™ SNAP-ON Transmitter
• Compact microphone transmitter that converts any dynamic/condenser XLR hardwired micro-
phone (handheld, lavalier or headworn) to wireless operation
• OFF/MUTE/ON switch for ease of use
• Unique sliding battery compartment for quick pop-in battery replacement- uses standard 9V alka-
line battery
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Audio HI/LO gain selection for optimum sound
• 9V DC phantom powering on/off for lavalier or handheld condenser microphone
• Standard locking 3-pin connector with adjustable threaded ring to provide secure connection to
any XLR handheld or lavalier microphone connector
• Lightweight ABS housing with integral antenna