2. amps-preamps
  3. 1132059795

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
kgturner's avatar
kgturner
663 posts
 
i think you can use pretty much any octal based pentode in the sli-80. i'm using kt90 in my cary monos. i would suggest you adjust the bias within the range and see which you prefer the most. honestly, the best way to answer your questions is to call cary directly. the customer service there is great when it comes to answering questions.
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 !
More to discover