AM 320-01-808
91
5. PA 106 (Power Amplifier)
This board carries, apart from the actual stereo amplifier (2
xLM 12), a relatively extensive protective circuit. This
circuit connects the outputs of the amplifier to the
loudspeakers only if the following pre-conditions are given:
1. the supply voltages of the amplifier are present;
2. no DC voltage is at the amplifier outputs;
3. the switch-on circuit of the power supply opens
the amplifier output (PAOF F).
The switching on will be delayed C 13, R 21 to avoid
amplification of "start-up" noise and power surges
generated by the organ.
PA 106, Component layout
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