Bias adjustment of Symphonic Line RG9 MK4 ?

[tingtong5]

Hi all,

I am the happy owner of a Symphonic Line RG9 MK4 Stereo amplifier and after recapping (its 10 years old now) I would like to check the bias and adjust it if needed.

So I send an e-mail to Symphonic Line to ask how to measure bias and what the bias current should be. The answer:

We send - think about modification to higher version with better sound.
Hier ist ein Link zu „Preisliste Englisch 2017.pdf“

Not very helpfull!!

Anyway, anyone here who could enlighten me on how to determine if bias is still ok?

Regards,

Ronald

 

[Michael Rothacher]

Did you try Klaus?

 

[tingtong5]

Did you try Klaus?

Who is Klaus ??

 

[Michael Rothacher]

Klaus Bunge in the U.S. from Odyssey Audio. He may have info. Worth a try. Good luck.

 

[tingtong5]

Klaus Bunge in the U.S. from Odyssey Audio. He may have info. Worth a try. Good luck.

Thanks! 🙂