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In Reply to: RE: AudioNote Kit-1 posted by jetrexpro@aol.com on July 15, 2013 at 10:54:20:
Thanks for all the advice. I think I will have to use solid plate tubes. I ran through all the calcs and at a lower bias the output power is lower and the distortion is higher. It appears that the kit one is biased perfectly for optimal performance of a classic 300B tube. I have attached the operating point for the standard 82mA bias using two parallel 1.8K resistors. When compared to a 60ma bias, the output power drops from 8.12W to 6.68W and the max distortion increases from 8.7% to 9.3%. I will have to see what I can do with the mesh plate 300B's, as it appears that I will not be able to use them. Thanks again for your help.
Edits: 07/15/13
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Follow Ups
- RE: AudioNote Kit-1 - rlyach@yahoo.com 12:59:26 07/15/13 (6)
- It may not be the tube - Frihed89 01:35:27 07/24/13 (5)
- RE: It may not be the tube - rlyach@yahoo.com 06:40:57 07/24/13 (4)
- OK - Frihed89 22:19:27 07/24/13 (1)
- RE: OK - rlyach@yahoo.com 06:31:26 07/25/13 (0)
- RE: It may not be the tube - astrostar59 07:15:55 07/24/13 (1)
- RE: It may not be the tube - rlyach@yahoo.com 07:47:15 07/24/13 (0)
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