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McIntosh MR 78 tuner deemphasis change?

Gentlemen,

I am not sure how to change the deemp from 75 to 50 us.
Schematic can be seen here:
https://www.hifiengine.com/manual_library/mcintosh/mr78.shtml

Thanks for help.



McIntosh MR 78 tuner deemphasis change?

Thank you

McIntosh MR 78 tuner deemphasis change?

Nobody knows?

McIntosh MR 78 tuner deemphasis change?

Hello

Wich serial number you have on your MR78 ? de-emphasis is not the same for all serial numbers .

McIntosh MR 78 tuner deemphasis change?

Did not see your message, because we will not be notified.
Email also seems to be impossible (try to contact the webmaster..).
The serial is AD2636.
Thank you

McIntosh MR 78 tuner deemphasis change?

pumping up

McIntosh MR 78 tuner deemphasis change?

Remove C331 and C334 from the MPX PC BOARD 044-552
Replace C406 and C407 on the OUTPUT AMPLIFIER BOARD 044-794 for 1.2 nF instead of the current 100 pF

Succes

Best regards
Paul

McIntosh MR 78 tuner deemphasis change?

Thank you