Filter
Top Products
9
6. Instrument Use
Secure the connection from the GT CABLE (30) by turning the slip ring on the plug
into the transmitter clockwise to thread it on the jack. To unplug, reverse the process.
Plug the 1/4” phone plug into the instrument. When ready to play, slide the audio
MUTE SWITCH (26) to “ON” position Adjust the volume of the receiver as per the
Audio Output Instrument Connection section of the above UHF-4 receiver instruction.
(Note: The INPUT LEVEL CONTROL (28) is deactivated and not used when the UB-4 is
in INSTRUMENT mode. Levels should be adjusted with the volume control of your
instrument.)
(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 (30) has a factory installed capacitor inside the 1/4" plug. This
capacitor 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:
1) Make sure all guitar volume and tone pots are clean and all contacts are solid–this
is very important.
2) A 47pf capacitor soldered across the hot to ground terminals of the guitar’s
volume and tone pots will provide extra filtering.)
7. Microphone Use (with either a lavalier or headworn microphone)
Secure the connection from the LAVALIER (32) or HEADWORN MIC CORD (31) by
turning the slip ring on the plug into the transmitter clockwise 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 headworn 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. As the microphone cord
also serves as the antenna, be sure to extend it fully. Rolling up or shortening the cord
may reduce the effective operating range–keep it as straight as possible. When ready
to speak, slide the OFF/STANDBY/ON SWITCH (26) to the ON position. Adjust the
volume of the receiver as per the Audio Output Microphone Connection section of the
above UHF-4 receiver instruction.
[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 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 lavaliers, require more
acoustic gain and thus are also more prone to feedback than close-source mics such
as handheld or headworn models that are used close to the mouth].
For optimum performance, an INPUT LEVEL CONTROL (28) is provided. Adjust the
gain by turning the control with a small screw driver. For lavalier mic use, it is
recommended that the level be set at about 1/2 maximum. For headworn 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 distortion on the high level peaks.
(Note: Turning down the gain too
much can compromise the signal-to-noise and is not recommended.)
UHF4_man 2/15/05, 4:10 PM9