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Syrinx1 · 29th Dec 2018, 1:08 pm

Hi Rob, as Andy says, check out the load lines and adjust interstage attenuation to taste. First stage you probably need to maximise gain for low S/N. Cathode follower to drive tone stack is an option. I think this is something you'll need to tweek to taste when testing though. Any reason why you are going with the 1930 topology? Original design was somewhat flawed from a noise point of view, but the additional input gain stages will undoubtedly alter the feel and tone of the amp as well as reducing noise.

I'm interested to see how this goes. Please do post an update when you get this up and running.

29th Dec 2018, 1:08 pm	#3
Syrinx1 Pentode Join Date: Feb 2018 Location: Nottingham, Nottinghamshire, UK. Posts: 229	Re: Marshall 1930 clone Hi Rob, as Andy says, check out the load lines and adjust interstage attenuation to taste. First stage you probably need to maximise gain for low S/N. Cathode follower to drive tone stack is an option. I think this is something you'll need to tweek to taste when testing though. Any reason why you are going with the 1930 topology? Original design was somewhat flawed from a noise point of view, but the additional input gain stages will undoubtedly alter the feel and tone of the amp as well as reducing noise. I'm interested to see how this goes. Please do post an update when you get this up and running.