Nady Systems 401 User Manual
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O P E R A T I O N
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14
13
15
16
16
15
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WHT-15 Handheld Microphone Transmitter
1. Unscrew the BATTERY COMPARTMENT COVER (12) and remove, exposing the
BATTERY HOLDER (13). Insert a fresh 9V ALKALINE BATTERY (14), observing the
correct polarity as marked, and screw the cover back on to the microphone. Make sure the
cover is screwed on completely. A fresh alkaline battery can last up to 15 hours in use, but in
order to ensure optimum performance, it is recommended that you replace the battery after
every 10 hours of use.
2. Turn on the WHT-15 by sliding the OFF/STANDBY/ON SWITCH (15) to the STAND-
BY position (transmitter on, audio muted) or the ON position (transmitter and audio both on).
The BATTERY INDICATOR LED (16) will give a single quick flash, indicating usable
battery strength. In the case of a dead or low battery, the LED will either not go on at all or
will stay on continuously, indicating that the battery should be replaced with a fresh one. To
preserve battery life, turn the transmitter off when not in use.
3. The microphone is now ready to use. The TX LED INDICATOR (5) on the 401 receiver
should now be lit, indicating a received signal from the transmitter. When ready to speak,
slide the transmitter switch to the ON position. Adjust the volume of the receiver as per the
Audio Output Microphone Connection section of the above 401 receiver instructions. The AF
LEVEL LED DISPLAY (9) on the 401 receiver will light up to 5 LEDs (4 green and 1 red)
for all
input signals. Occasional flickering on and off during use of the top red LED indicator in this
display is normal, however if the red LED stays on continuously, it means the signal is too
loud and there is the possibility of overload distortion. If this occurs, back off from the
microphone until the red LED indicator only flickers on peaks.
[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so
that acoustic feedback (howling or screeching) will be avoided.]
[Note: Microphone elements can easily be destroyed by the buildup of salts and minerals
from perspiration and saliva. It is good practice to put a windscreen on the mic element at all
times to protect it.]
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