RXC-3000 Hardware Installation and User Guide
9000-0000-040 Revision 10 27 of 46 Genave Electronics
Setting PA Port Levels
There are 3 voltage controlled amplifiers on the RXC-3000 that boost the audio from the radio and
main IC (PWM) and then a final boost into the 600 Ohm transformer. These amplifiers are controlled
by R81, R95 and R100 respectively. To set the levels, rotate R100 to half volume then adjust R81
and/or R95 for the desired volume levels individually. If you are using the ADPCM module, you need
to set the volume with the potentiometer on the module. Once all of the levels are set, use R100 as the
main volume adjustment for setting audio out of the RXC-3000.
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