In Reply to: Here is the operating point for V2a posted by Tre' on April 18, 2007 at 10:43:31:
Tre',
The Eico designers probably used 40 VDC on the plate ( at .83 mA. ) draw for the intermediate stage ( 12AU7, line ) because they wanted to not stress the tubes.WE find many HF-81s with the original Mullard tubes in them, sounding good in 2007, when they were originally installed in about 1959. Thats pretty good, 48 years with original Mullard tubes.
How many of our current designs will do that after 48 years??
Jeff Medwin
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Follow Ups
- What they probably had in mind..... - drlowmu 04/19/0722:55:41 04/19/07 (5)
- That is absolutely ridiculous - Ray Moth 01:50:32 04/20/07 (4)
- Re: That is absolutely ridiculous - Tre' 10:14:54 04/20/07 (3)
- Re: That is absolutely ridiculous - drlowmu 12:57:05 04/20/07 (2)
- Re: That is absolutely ridiculous - Ray Moth 15:44:31 04/20/07 (0)
- Re: That is absolutely ridiculous - Tre' 13:11:10 04/20/07 (0)