I am attempting to simulate a long tail pair phase splitter using two 12AX7 triodes in LTSpice.
I tried multiple subcircuit models for the triode, all yielding the same results. I want to know if the circuit is wrong, or if the simulation is wrong.
The distortion of the signal is intentional, this is from a guitar amp with high distortion. I want to build this circuit, but as its from the internet and quite expensive, wanted to make sure it works and understand it by simulation.
Here is the relevant part from the schematic:
VC Approaches 250V, but on the transient reaches only about 120, still the problem is obvious. VA Approaches 310V VB Approaches 300V The phase splitter is supposed to drive a 6bq5 / EL84 push-pull pair.
And here is the transient analysis result.
What am I doing wrong either in the simulation or in the circuit?