In Reply to: RE: grid resistors first stage of amp posted by Naz on June 25, 2012 at 06:28:51:
CMiller combines with the grid to ground resistance to form a low pass pole. When the resistance is large and CMiller is comparatively large, F3 of the pole will be low enough to have an effect at the top of the AF band.
IMO, it's worth noting that some units with a large I/P grid to ground resistance have a pentode I/P stage. The list includes the H/K Cit. 2, the H/K Cit. 5, and the Dyna ST70. Accident? I think NOT.
Eli D.
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Follow Ups
- RE: grid resistors first stage of amp - Eli Duttman 18:16:29 06/25/12 (2)
- RE: grid resistors first stage of amp - Tre' 17:17:39 06/26/12 (0)
- RE: grid resistors first stage of amp - Naz 21:36:24 06/25/12 (0)