[Amps] 2x 4cx1500b Rl

[Benedikt Sveinsson]

Hi all

I brushing off a old project that I have been collecting parts for quite some time.

Was going to build a big SSPA, but I just can't throw this old project away, have all the parts and I always wanted to build a tube amp for HF, built few for vhf-uhf.

I'm now building the tank, and I have some questions about the Rl value

What value can I expect for these two tubes operating @3000v, max current is about 1.5A class AB - the normal calculation is giving quite low value
is about 1200 Ohms - Does anyone here have some real world experience what to expect or what values I should use when measuring the tank?


73, Benni TF3T