In Reply to: It can, but posted by Ralph on February 9, 2017 at 11:30:50:
I might try to simplfy the input stage PS by removing the regulator ICs, both positive and negative rails for the first differential stage first, by swapping into the PI RC PS to see if the harsh would go away.
Second thought is to swap in a 6H6n tube to replace the 6H30, this move may need to change the valuse of 1st stage resistor values because the 1st and 2nd stages are direct coupled
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Follow Ups
- RE: It can, but - Eric Chan 03:24:38 02/10/17 (6)
- One of the problems with this design - Ralph 11:35:33 02/10/17 (4)
- RE: One of the problems with this design - Eric Chan 08:47:58 02/11/17 (2)
- RE: One of the problems with this design - Ralph 14:39:41 02/13/17 (0)
- RE: One of the problems with this design - JKT 10:44:28 02/11/17 (0)
- RE: One of the problems with this design - JKT 12:58:32 02/10/17 (0)
- RE: It can, but - JKT 11:13:18 02/10/17 (0)