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Q Bias for Cary SLI-80

Cary co. says that proper bias for Cary SLI-80 is about 75mA.

But the allowed range of bias is from 75mA to 100mA.
Which one is the best from your experience?
I would share our information.

And, I heard that I can use EL34 or 6L6 outpu tubes instead of KT88/6550 and when using other output tubes, it should be same bias.

Is it right? If anybody knows it, please share it.

skyserve
skyserve OP
16 posts
 
Thank you, Rrsclyde!

Good information!
If anyone uses 6LL on the SLI-80, please share it.
skyserve OP
16 posts
 
I tired EL34 on my SLI-80. EL34s are Antique Selections EL34 JJ Tesla Blue Tubes.

I adjusted bias as 90mA.

Sound is firmed up and more clear.
Very high sound is too musical, Bass is more tight!

It's big change! If you have SLI-80, try it.
artmaltman
769 posts
 
How do you find the sound varies from 75 to 90 on the bias?
Thanks,
Art
nicodemix
90 posts
 
I figured I would bump this thread to see if anyone has played around with biasing on the Cary SLI-80 preferably in triode mode and KT88's. Preferences/Opinions?

I'll echo Artmaltman's question above.
stratoholic
4 posts
 
If you bias the EL34s at 75mA you will blow the AC fuse.  The Cary manual is unclear on bias settings for the different tube types.  75mA is good for KT88's.  EL34's should be biased at 50-55mA each channel.  I confirmed this with Cary.
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