Thanks for the feedback
Can you post the spice model?
Here's a spice model of an amp that closely matches the tube amp in the patent:
http://duncanamps.com/zips/el34_push_pull.zip
If you raise the input voltage to say 2v you will see something very close to diagram 3F.
At think the point is that class-ab tube amp overdriven migrates to class-b type output.
Interestingly, at http://tech.groups.yahoo.com/group/LTspice/ there is a schematic of a preamp that does crossover distortion as well as clipping:
Files/Examples/Apps/Audio Distortion Preamp for Electric Guitar
Can you post the spice model?
Here's a spice model of an amp that closely matches the tube amp in the patent:
http://duncanamps.com/zips/el34_push_pull.zip
If you raise the input voltage to say 2v you will see something very close to diagram 3F.
At think the point is that class-ab tube amp overdriven migrates to class-b type output.
Interestingly, at http://tech.groups.yahoo.com/group/LTspice/ there is a schematic of a preamp that does crossover distortion as well as clipping:
Files/Examples/Apps/Audio Distortion Preamp for Electric Guitar