MA7200 Tone Control

850cc

New Member
Jan 14, 2021
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I never used TONE CONTROL but now I wanted some less treble on 1 of my inputs. I followed the manual and it does not seem to work. I also did a factory reset. Actually the moment I press the tone button, the sound is muted. The happens on all input. The moment I activate tone control via fromt panel or remote the sound is muted. Sure I can set the +-12dB on treble and bass but when activated the sound stops.
Trimming the input strength or balance or mono/stereo..... all except tone control.
Who can help ?
 

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