Real World ESL Direct Drive Amplifiers...Tube Manuals

Posted by Bob Ratner on November 12, 2003 at 21:12:47:

In Reply to: Re: Re: Re: Re: Real World ESL Direct Drive Amplifiers... posted by Brian Walsh on November 12, 2003 at 13:22:27:

Brian, Thanks for the Tube Data Web sites....I knew about Frank's ,but not about the rest : Sylvania,GE,RCA Web Sites....Very helpful...

What I found to be the most interesting was that Acoustat worked the 6BH5s tubes outside of their maximum voltage limitations and got away with it!

Evidently Acoustat knew something about tube arc over that allowed them to work out side printed tube specifications...

And, once a good set of [4] 6HB5's were in place in the Acoustat Amplifiers, they seem to have played for decades....With out problems...

The Acoustat amps did have other problems: thermal drift,control noise and IC Chip failure..

Once in a while an Acoustat Speaker/Servo Amplifier set comes up on e-bay,and if they do, they sells for a good price, quickly...Like Janzen and Sound Lab...Acoustat is loved for their unique pure sound...

Follow Ups:

• Acoustat sound -Yup! Best of the rest, eh? (nt) - goldenthal 11:31:41 11/14/03 (0)
• Re: Real World ESL Direct Drive Amplifiers...Tube Manuals - Brian Walsh 22:47:49 11/12/03 (7)
  • Re: Re: Real World ESL Direct Drive Amplifiers...Tube Manuals - Bob Ratner 23:17:33 11/12/03 (6)
    • Re: Re: Re: Real World ESL Direct Drive Amplifiers...Tube - Brian Walsh 06:25:45 11/13/03 (0)
    • Less bias on older panels - Roy 01:02:37 11/13/03 (4)
      • Re: Correction - Roy 03:01:38 11/14/03 (0)
      • Re: Less bias on older panels..More Bias...Higher Drive AC - Bob Ratner 08:47:06 11/13/03 (2)
        • Re: Re: Less bias on older panels..More Bias...Higher Drive AC - Roy 10:58:46 11/13/03 (1)
          • Re: Less bias on older panels..More Bias...Higher Drive AC - Bob Ratner 17:38:53 11/13/03 (0)

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