Troubleshooting ltspice amp circuit

temol

temol

Well-known member
I've been trying unsuccessfully for a few days to simulate a Fender Super (6g4a). The preamp itself is fine. The phase inverter works. But as soon as I add the output tubes, everything falls apart. I've tried three different 6L6 models. The general scenario is that the simulation stops prematurely. I'm referring only to the .tran. It shows waveform only for the signal source. As soon as it finishes, it considers everything ready. But for the other nodes, there's only about 1.4ms of data. Someone would be willing to take a look at the asc file?
I tried chatgpt but eventually gave up. Too many "you're absolutely right."
 
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I'm working through it right now, it's an interesting puzzle. I have a working Bassman 50 schematic to swap in bits off of and I think I'm already pretty close. LTspice freaks out when things go nonlinear so there may just be some operating conditions that are out of bounds for a trans analysis, I think I will be able to tell if and when we actually get to that point though.
 
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