Samson CR77 Owner's Manual page 12

Setting Up and Using the
Concert Series System
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 CR77
is fully clockwise (at its "10" setting). If it is and the signal coming from the CR77 is still
weak and/or noisy, do the following:
• If you are using a HT7 transmitter, use the supplied plastic screwdriver to turn the
Level control (trimpot) on the transmitter slowly clockwise (towards the "Max" position)
until the signal reaches an acceptable level.
• If you are using a CT7 transmitter with connected lavalier microphone or headset,
its Level control has been factory preset to provide optimum level for the particular
lavalier or headset model being used and so no adjustment should be necessary.
Any weakness of signal should therefore simply be a matter of the microphone being
too far from the mouth; try moving it closer. If this does not solve the problem, use the
supplied plastic screwdriver to turn the Level control (trimpot) on the CT7 slowly clock-
wise until the signal reaches an acceptable level.
• If you are using a CT7 transmitter with an instrument such as electric guitar or bass,
raise the output level of the instrument until a good signal is achieved. Alternatively,
you can use the supplied plastic screwdriver to turn the Level control (trimpot) on the
CT7 slowly clockwise until the signal reaches an acceptable level.
12. Temporarily turn down the level of your mixer/amplifier system and turn off the power
to your transmitter, leaving the CR77 on. Then restore the previously set level of your
mixer/amplifier. With the transmitter off, the receiver output should be totally silent—if it
is, skip ahead to the next step. If it isn't (that is, if you hear some noise), you may need to
adjust the CR77 front panel Squelch control. When the Squelch control is at its minimum
setting, the Concert Series system always provides maximum range without dropout; how-
ever, depending upon the particular environment your system is used in, you may need
to reduce that range somewhat in order to eliminate band noise when the transmitter is
turned off. To do so, use the provided screwdriver to rotate the Squelch control completely
counterclockwise (to the "Min" position), then slowly turn it clockwise until the noise disap-
pears. If no noise is present at any position, leave it at its fully counterclockwise "Min"
position (so as to have the greatest overall range available).
13. When first setting up the Concert Series system in a new environment, it's always
a good idea to do a walkaround in order to make sure that coverage is provided for your
entire performance area. Accordingly, turn down the level of your audio system and turn
on both the transmitter and receiver. Then, with the transmitter unmuted, restore the
level of your audio system and while speaking, singing, or playing your instrument, walk
through the entire area that will need to be covered. As you do so, you will find that the
green "A" and "B" LEDs on the CR77 receiver occasionally switch on or off, always show-
ing you which antenna is receiving the stronger signal. Always try to minimize the distance
between transmitter and receiver as much as possible so that the strongest possible sig-
nal is received from all planned transmission points. In fixed installations such as A/V or
corporate conference rooms or for extended range applications (where the transmitter and
receiver are more than 150 feet apart), it may be desirable to angle the antennas different-
ly from their vertical position or to install the receiver in the same room as the transmitters
(and, if necessary, to extend the wiring to remote audio equipment).
If you have followed all the steps above and are experiencing difficulties, contact your
local distributor or, if purchased in the United States, call Samson Technical Support
(1-800-372-6766) between 9 AM and 5 PM EST.
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