In Reply to: Questions about 6BG6G amp build (schematic) Grommes 216BA posted by PeterI on May 22, 2017 at 21:02:33:
It is a variation on the Williamson theme. Compare it to the self biased Heath W5M.
The suggestion to use 6CG7s instead of the less linear 12AU7 is quite sensible. Remember, Williamson used 6SN7s and the 6CG7 is electrically "equivalent" to the 6SN7.
20 muF. in the 1st filter cap. position is good, if the rectifier is a 5R4, but more is OK, if a 5U4 is used.
5R4 data sheet
5U4 data sheet
Eli D.
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Follow Ups
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - Eli Duttman 12:00:31 05/23/17 (9)
- Here is another way of doing this with a pair of chokes and a small charging cap. - Michael Samra 13:28:09 05/23/17 (3)
- RE: Here is another way of doing this with a pair of chokes and a small charging cap. - PeterI 14:38:49 05/23/17 (2)
- RE: Here is another way of doing this with a pair of chokes and a small charging cap. - Michael Samra 01:21:35 05/24/17 (1)
- OPTs and FB - PeterI 07:30:08 05/24/17 (0)
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - PeterI 12:14:10 05/23/17 (4)
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - Eli Duttman 13:14:19 05/23/17 (1)
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - PeterI 14:44:24 05/23/17 (0)
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - Jim McShane 13:08:35 05/23/17 (1)
- RE: Questions about 6BG6G amp build (schematic) Grommes 216BA - PeterI 19:57:05 06/21/17 (0)