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04-16-2021, 08:07 PM
Hi Strelok
I never said the cathode follower narrows the bandwidth - in fact it should widen it.
As a buffer for a send out a CF is fine. It does exactly what a buffer is supposed to do. As a tone-stack driver the CF kills tone. You have to remember that the original tone stacks in Fender amps et al were plate-driven and tweaked to work as desired with that high drive impedance. Reducing the drive impedance changes how the controls work, to the point where the tone stacks function poorly - tone change versus control sweep is greatly reduced so what is the advantage?
The cathodes of the tube sections in a tweed mixer (anode-coupled mixer) must be separate. This allows each input to have its own gain, reasonably independent of the other inputs. You can even mix different tube types.
I never said the cathode follower narrows the bandwidth - in fact it should widen it.
As a buffer for a send out a CF is fine. It does exactly what a buffer is supposed to do. As a tone-stack driver the CF kills tone. You have to remember that the original tone stacks in Fender amps et al were plate-driven and tweaked to work as desired with that high drive impedance. Reducing the drive impedance changes how the controls work, to the point where the tone stacks function poorly - tone change versus control sweep is greatly reduced so what is the advantage?
The cathodes of the tube sections in a tweed mixer (anode-coupled mixer) must be separate. This allows each input to have its own gain, reasonably independent of the other inputs. You can even mix different tube types.
