5
Instrument Connection
(Using the BT-8U transmitter with instruments)
To use the 1/4” line level
AUDIO OUT JACK (6)
for instrument use, follow the
instructions for the Microphone Connection (above), except start the receiver
VOLUME (7)
at 1/2 MAX and adjust until the volume level is optimal.
(Note: 1:1 with a directly connected cord from the instrument to the amp is with
the volume about 3/4 MAX, and MAX volume from the receiver will be about
4dB higher than 1:1. If the volume control is set too high, you may overload
your mixer or amp.)
6. AF LED Display
The DKW-8U receiver is equipped with an
AF LED DISPLAY (8)
. The LED
lights whenever an audio signal is being transmitted from the transmitter.
(Note: The AF LED Display is not a peak level indicator so it can light continu-
ously during audio signal input to the transmitter.)
2
1
6
4
3
5
8
7
8
6. Instrument Use
Secure the connection from the
GT CABLE (17)
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
OFF/STANDBY/ON SWITCH (21)
to either “STANDBY or ON”
position. Adjust the volume of the receiver as per the Connecting the Audio
Output of the above DKW-8U receiver instructions.
(Note: The
INPUT LEVEL CONTROL (23)
is deactivated and not used when
the BT-8U is in INSTRUMENT (GT) 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 (17)
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 (19)
or
HEADWORN MIC CORD
(18)
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. When ready to speak, slide the
OFF/STANDBY/ON SWITCH (21)
to the
either “STANDBY or ON” position.
Adjust the volume of the receiver as per the Connecting the Audio Output
above DKW-8U 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 feed-
back, 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 also more prone to feedback than close-source mics
such as handheld or headworn models that are used close to the mouth].
8. For optimum performance, an
INPUT LEVEL CONTROL (23)
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 head-
worn mic use, it may be advisable to turn the gain down somewhat, depending
