Kenwood KA660D

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Feb 28, 2024
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Hi Folks, I have restored this Amp,- switches cleaned, some caps replaced, voltages checked,- and it's working fine on all inputs
including phono on MM (moving magnet). But when I selected MC (moving coil) I expected a large increase in volume but instead volume dropped way back and lost most of the treble. Both channels the same.
I'm trying to trace the circuit but the only free service manuals appear to be from the same source and are illegible at component level. But it does appear that the actual circuit differs from the manual.
If anyone has this Amp, and uses it on 'Phono" I would be keen to know if the MC selection works properly.
 
Thanks for that. I thought touching the 'live' of the input RCA plug would have given a louder buzz on MC compared to MM but that is not the case either.
 
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