Change Marantz 10B de-emphasis - help

[rhuegli]

Hi

I would like to change the US de-emphasis (75 µs) of my Marantz 10B tuner to the European (50 µs). I could not find any hint in a service manual or elsewhere how to do this.

Could somebody give me a practical hint or is aware of a solution. I estimate a capacitor has to be changed somewhere here (see attached schematic).

Best regards
Rolf, Switzerland

P.S. have a look to my site http://www.zilla.li/All_Tubes/All_Tubes.html where you will find contemporary reviews, schematic circuit diagrams and manuals of the Marantz models 7, 8B, 9 and 10B. Enjoy!

 

[KentTeffeteller]

You need to contact Terry DeWick or Mike J. Zucarro about this question. There was very little service information published on this unit. See what you can find out and please post what you do find out.

 

[rhuegli]

Thanks to Terry DeWick - the solution is in the attachment.

 

[crooner]

Excellent! Terry is simply amazing. The best! :thmbsp:

 

[rhuegli]

Marantz 10B File Sharing

The hyperlink to the contemporary reviews, the schematic circuit diagram and manuals for the Marantz 10B FM Stereo Tuner changed to:

http://www.zilla.li/All_Tubes/Marantz_10B/index.html

Stay tuned!
Rolf, Switzerland