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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
danlib1
819 posts
 
After much experimentation with my old SLI-80, I found biasing at around 90 to be preferred. YMMV depending on speakers, etc.
larry510
121 posts
 
hi,

I've used KT88's ( EH and JJ Telsa) and 6550's ( Tung Sol nos solid gray plates, and Phillips nos ) biased at 75 with good sound. The favorites of mine are the JJ's and Tung Sols.

I tried EL-34's and , well they are in a box and the Kt-88s are in the amp.

good listening,

Larry
skyserve OP
16 posts
 
Thank you very much.
Good information!

Then, is it same bias for EL34, 6L6 like KT88?
(range is from 75 to 100 mA, right?)

I have already sent email withsame questions to Cary Co.
But they have few information for that. (I think they are lazy to answer it.)

Thanks !
kgturner's avatar
kgturner
601 posts
 
emailing cary yields hit or miss responses. actually pick up the telephone and call them. you'll get a lot more information this way.
rrsclyde
81 posts
 
Personally I liked the EL34's, biased higher (90 to 95), in my SLI-80.
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