Nady Systems WA-125U Owner's manual - page 3
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SYSTEM FEATURES
WA-125U Receiver/Amplifier
• Powerful 20W audio output
• Operation in the wide-open, uncluttered upper UHF band (available on single frequencies in
range 797-805MHz) for optimum operating range and freedom from interference
• Built-in echo/reverb
• 1/4” unbalanced input jacks: 1 MIC, 1 AUX; one 1/4” unbalanced RECORD OUT; treble and bass
controls
• Wireless system features noise reduction companding circuitry for quietest operation with a wide
dynamic range.
• Available with choice of UH-4 or Link-4 handheld mic, UB-4 lavalier/headset mic transmitters
• External AC, DC (12-15V) or internal battery powered (8 X “D” alkaline or rechargeable batteries)
• Optional RB-120 (12-15V) internal rechargeable battery available
• Mountable with optional MST-4B aluminum tripod stand
• Internal charging ports for transmitter 9V (Ni-Cad or Ni-MH) rechargeable batteries
• Small and lightweight—only 8.3” x 10.6” x 5.4” (211 x 270 x 137mm) and 5.3 lbs. (2.4 Kg)
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
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Input level control for optimum sound adjustment
• Rugged ABS housing with integral antenna
UB-4 Bodypack Transmitter
• Compact bodypack with screw on jack for instrument or lavalier microphone input
• OFF/MUTE/ON switch for ease of use
• Unique sliding battery compartment for quick pop-in battery replacement–uses standard 9V
alkaline battery
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Input level control for optimum sound adjustment (LT/HM)
• Rugged ABS housing with external antenna
LINK 4™ Plug-In Transmitter
• Compact microphone transmitter that converts any dynamic XLR hardwired microphone to wire-
less 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 LO/MED/HI gain selection for optimum sound
• Selectable 9V DC phantom powering for lavalier condenser microphone operation
• Standard locking 3-pin connector with adjustable threaded ring to provide secure connection to
any XLR handheld direct or to lavalier microphone cable
• Lightweight, ABS housing with integral antenna
Level Trim Adjust
For optimum performance, an INPUT SELECT SWITCH (44) is provided. You could select the
switch to LO/MED or HI gain setting defending to your microphone use. Depending on the average
distance between vocalist’s mouth and microphone, you can adjust the level for your application.
Factory setting is MED for hardwire dynamic microphone. This is a setting to be used in most typi-
cal close microphone applications. Set for maximum possible gain and headroom without notice-
able distortion of the high level peaks. Experiment and set for maximum possible gain without
audible distortion on the high level peaks.
Receiver Volume Controls Adjust
The PA sound output level is control by the volume control MIC/TS knob. If feedback (howling
sound) occurs, try first turning own the TREBLE CONTROL (7). If feedback still is present, try turn-
ing down the VOLUME (6) or repositioning the WA-125U with respect to the wired or wireless mic
being used.
The bodypack transmitter is now ready to use. The RF ON indicator on the receiver should now
be on, indicating a received signal from the transmitter. When ready to speak, slide the OFF/
STANDBY/ON SWITCH (42) to the ON position. Adjust the volume of the receiver as outlined in the
Receiver Operating Instructions section: Operating the WA-125U.
Notes:
• Selecting LOW gain setting can compromise the signal-to-noise and it is not recommended.
• The microphone ball on your hardwire microphone functions as an integral antenna. For proper
operation, it should not be cover or touch during operation.
• Observe care in selecting P.A. volume, transmitter location and speaker placement so that acous-
tic feedback (howling or screeching) will be avoided.
LINK 4™ PLUG-IN TRANSMITTER
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