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WLT Bodypack Transmitter
1. Snap open the BATTERY COMPARTMENT (7)
and insert a fresh 9V BATTERY (8), observing
the correct polarity. Close the compartment.
2. The WLT is provided with a 3.5 mm
LOCKING JACK (9) for connecting the
microphone. Plug in either the LAVALIER/
LAPEL (10) or the HEADWORN MICROPHONE
(11), as supplied. To secure the connection,
turn the metal slip ring on the plug
clockwise to thread it on to the jack. To
unplug, reverse the process. Slip the
transmitter into a pocket or clip on to your
clothes. To use the lavalier mic, attach it
at chest level. Do not place too close to
the mouth—a distance of about six inches
usually works best. To use the headworn
mic, place it on the head and adjust the mic
boom so that the mic is about one inch to
the side of the front of the mouth.
(Note: The lavalier or headworn mic wire is also the
transmit antenna, and rolling up or shortening the
wire may reduce the effective operating range.
Extend the wire fully during use, and keep it as
straight as possible.)
3. Turn on the WLT by sliding the OFF/
STANDBY/ON SWITCH (11) to the Standby
position (transmitter on, audio muted) or the
On position (transmitter and audio both on).
The BATTERY INDICATOR LED (12) will give a
single quick flash, indicating usable battery
strength. In the case of a dead or low
battery, the LED either will not go on at all or
will stay on continuously, indicating that the
battery should be replaced with a fresh one.
4. The microphone is now ready to use.
When ready to speak, slide the transmitter
switch to the On position and adjust the
volume of the receiver as per the previous
Receiver Operation section. For optimum
performance, an INPUT LEVEL CONTROL (13) is
provided on the top panel of the WLT. Adjust
the gain by turning the control with a small
slot head screwdriver. It is recommended
that this control be turned to maximum gain.
(Note: Turning down the input gain too much can
compromise the signal-to-noise ratio and is not
recommended. Set for the maximum possible
gain and headroom without noticeable distortion
on the high level peaks).
(Note: Observe care in selecting P.A. volume,
transmitter location and speaker placement so
that acoustic feedback (howling and screeching)
will be avoided. Please also observe the
pickup patterns of the microphone selected:
omnidirectional mics pick up sound equally from
all directions and are prone to feedback if not used
carefully. Unidirectional mics are more resistant
to feedback, but pick up sound sources best that
are directly in front of the mic. Also, mics that are
farther from the sound source, such as lavaliers,
require more acoustic gain and thus are also more
prone to feedback than close-source mics such as
handheld or headworn mics that are used close to
the mouth.)
(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.)