Hello, I've build this (found somewhere from internet) and it sounds good.
No audio problem, nor THD% change. It seems less booming bass and more available dynamic.
Now screen should work just at little bit lower voltage than the plate. Safe but nearly the max allowed (i.e at plate voltage). But I didn't measure voltages yet.
Any concern about this zener circuitry (instead connecting it, as usual, to the lower voltage power supply of the previous stage via a kohm resistor) ?
Thanks
No audio problem, nor THD% change. It seems less booming bass and more available dynamic.
Now screen should work just at little bit lower voltage than the plate. Safe but nearly the max allowed (i.e at plate voltage). But I didn't measure voltages yet.
Any concern about this zener circuitry (instead connecting it, as usual, to the lower voltage power supply of the previous stage via a kohm resistor) ?
Thanks