WS-16U RECEIVER
1. Rack mounting the Receiver
There are 2 options available for rack mounting the WS-16U receiver: singly or side-by-
side with another WS-16U Series receiver.
a. Single mounting: Remove the receiver
SIDE MOUNT CLIP (1)
from each side of
the receiver (as shown) and slide in the optional
ERM-12 RACK EARS (2)
.
b. Side-by-side double mounting: After removing the
SIDE MOUNT CLIPS (1)
from
both WS-16U receivers, join the two receivers with the
EJC-2 JOINING CLIP
(3)
and attach the
ERM-22 RACK EARS (4)
as shown.
(Note: Do not mount the
receiver in a rack directly above an amplifi er or other source of high heat — this
could degrade the performance of the WS-16U. Always ensure adequate airfl ow
and heat dissipation in any rack confi guration.)
2. Powering the Receiver
Plug the
18V AC/DC ADAPTER (5)
provided into the
DC INPUT JACK (9)
on the back
of the receiver. Then plug the power supply into an AC outlet. Press the
POWER
SWITCH (13)
once to turn on the receiver. The
POWER ON LED (12)
will now light and
the receiver is operational.
3. Antennas
The WS-16U receiver is equipped with attached dual
FOLDING ANTENNAS (16)
.
These should be extended fully to obtain maximum range. Optimal positions of the
antennas are 45° from the receiver (at 90° from each other). For maximum range, it
is always best to maintain a line of sight (no obstructions) between the receiver
antennas and the transmitter at all times whenever possible.
4. Mute (Squelch) Adjustment
In normal operation, the
SQUELCH CONTROL (6)
should be set clockwise fully to the
factory preset RF level (Max. Sens.). However, in areas of high RF activity, the squelch
(or mute, as it is sometimes called) may need to be adjusted to compensate for the
adverse conditions in a particular location. If, with the transmitter off, the receiver’s A
or B
DIVERSITY LED INDICATORS (14)
fl icker or stay on, the squelch control should
be turned counterclockwise until the A or B LEDs extinguish. When the squelch is
properly adjusted, the A or B LEDs will only light when the system transmitter is turned
on. Turning the squelch control too far counterclockwise will reduce the range, but
yield a quieter squelch (mute) function. During operation, especially at ranges greater
than 75 feet, the A or B LEDs may alternate briefl y. This is normal unit’s DigiTRU
Diversity™ reception feature that ensures the received audio will not be interrupted. When
both LEDs extinguish, the transmitter is out of range for that given location, and the user
should move closer to the receiver to re-establish the radio link.
4
9
(Note: The BT-16U is supplied with a removable antenna. It should be operated with
the supplied antenna all times. For optimum operating range, always maintain
line-of-sight between the transmitter and the receiver whenever possible.)
(Note: Scratchy noises can sometimes occur when some electric guitars with dirty pots
or connections are used with any wireless system. Therefore, the supplied
INSTRUMENT CORD (40)
has a factory-installed capacitor inside the 1/4” plug. This
capacitor provides fi rst order fi ltering 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 as
this is very important.
b. A 47pf capacitor soldered across the hot to ground terminals of the guitar’s
volume and tone pots will provide extra fi ltering.
7. Microphone Use (with either a lavalier or head-worn microphone)
Secure the connection from the
HEADWORN (41)
or
LAVALIER MIC CORD (42)
by
turning clockwise the slip ring on the plug into the transmitter to thread it on to the
jack. To unplug, reverse the process. To use the lavalier mic, attach it at chest level.
Do not place it too close to the mouth - a distance of about six inches usually works
best. To use the head-worn mic, place it on the head and adjust the boom so that the
mic is about one inch to the side of the front of the mouth. When ready to speak,
slide the
AUDIO SWITCH (34)
to the ON position. Adjust the volume of the receiver
as per the Audio Output Microphone Connection section of the above WS-16U
receiver instruction
[Note: Observe care in selecting P.A. volume, transmitter location and speaker place-
ment so that acoustic feedback (howling and screeching) will be avoided. Please also
note the pickup pattern characteristics 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
lavalieres, require more acoustic gain and thus are more prone to feedback than close-
source mics such as handheld or head-worn models that are used close to the mouth].
For optimum performance, an
INPUT LEVEL CONTROL (39)
is provided. Adjust the
gain by turning the control with a small screwdriver. For lavalier mic use, it is recom-
mended that the level be set at about 2/3 maximum. For head-worn mic use, it may be
advisable to turn the gain down somewhat, depending on the volume levels expected. In
either application, experiment and set for maximum possible gain without audible distor-
tion on the high level peaks.
(Note: Turning down the gain too much can compromise the
signal-to-noise and is not recommended.)
