Need suggestion for circuit to control output of audio power amp.
Requirements:
1. Circuit is placed between output of power amp and speaker.
2. Circuit should be able to "disconnect" amp from speaker (similar to a relay contact, but solid state).
3. Circuit should be switched on or off by 5v control voltage via CMOS or microcontroller.
4. 5v control voltage must be isolated from audio signal
5. Would like ability to optionally control circuit so that audio signal is applied gradually to speaker
to prevent damage.
6. Amp max rated output power will vary (say...between 200W and 800W RMS).
7. And, of course, must not introduce any noticable degredation/distortion of the original audio signal.
thanks
eT
Requirements:
1. Circuit is placed between output of power amp and speaker.
2. Circuit should be able to "disconnect" amp from speaker (similar to a relay contact, but solid state).
3. Circuit should be switched on or off by 5v control voltage via CMOS or microcontroller.
4. 5v control voltage must be isolated from audio signal
5. Would like ability to optionally control circuit so that audio signal is applied gradually to speaker
to prevent damage.
6. Amp max rated output power will vary (say...between 200W and 800W RMS).
7. And, of course, must not introduce any noticable degredation/distortion of the original audio signal.
thanks
eT
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