7
Setting Up and Using the
Concert Series System
8. Turn on the power to one of the HT7 transmitter (using its Power on-off switch); the green
“HIGH” Battery strength LED will light if the battery is sufficiently strong. At this point, a few
segments in the CR277 front panel RF Level meter should light; the more are lit, the stronger the
RF signal. If only one or two segments light (indicating a relatively weak signal), try relocating the
CR277 or changing the position of one or both of its antennas. If all six segments light, the CR277
is receiving an optimally strong RF signal and is placed and positioned correctly.
9. Now it’s time to set the audio levels. Turn on your connected amplifier and/or mixer but keep
its volume all the way down. Next, make sure that your transmitter is un-muted by setting its
Audio switch to “On.” Then set the Volume knob on the CR277 fully clockwise (to its “10” setting);
this is unity gain. Speak or sing into the mic at a normal performance level while slowly raising
the volume of your amplifier/mixer until the desired level is reached.
10. If you hear distortion at the desired volume level, first check to see whether the red “Peak”
LED on the CR277 is lit. If it is not, make sure that the gain structure of your audio system is
correctly set (consult the owners manual of your mixer and/or amplifier for details). If the yellow
“Peak” LED is lit, do the following:
• On the HT7 transmitter, use the supplied plastic screwdriver to turn its Microphone Input
Level control (trimpot) slowly counterclockwise (towards the “Min” position) until the
distortion disappears.
Note that, following this setup procedure, you can always lower the Volume knob of the CR277 in
order to attenuate the output signal if necessary.
11. Conversely, if you hear a weak, noisy signal at the desired volume level, again make sure that
the gain structure of your audio system is correctly set (consult the owners manual of your
mixer and/or amplifier for details) and that the Volume control of the CR277 is fully clockwise (at
its “10” setting). If it is and the signal coming from the CR277 is still weak and/or noisy, do the
following:
• On the HT7 transmitter, use the supplied plastic screwdriver to turn the Level control (trim-
pot) on the transmitter slowly clockwise (towards the “Max” position) until the signal reaches
an acceptable level.
