Perhaps you just changed the distortion from symmetrical (odd order) to non- symmetrical (even order). This is largely the difference between single ended and double ended(push-pull) output stages, although probably to an even greater degree in your instance since the output transformer was not designed for this.
Since each valve has his own cathode resistor, no harm will come from running the amp this way. If the cathode resistor were shared by both valves the current though your lone 6BQ5 would be too high and would probably result in an angry red plate.
Wade
Since each valve has his own cathode resistor, no harm will come from running the amp this way. If the cathode resistor were shared by both valves the current though your lone 6BQ5 would be too high and would probably result in an angry red plate.
Wade
It still sounds clean, and the bass is still present in spite of the magnetic bias in the OPT. When I tried it I just did it for a laugh to see what it sounded like but I was surprised that it actually sounded pretty good! I did check the schematic before pulling out one half of the output stage to ensure nothing harmful would happen and as you said, it is safe to run it like this and quite frankly I enjoy the sound!
That's exactly it- by having a DC current flowing in one half only you permentantly magnetise the core. This means that the transformer is then pushed heavily towards core saturation, and therefore LF distortion and even overheating.bigwill said:Could you elaborate? I'm having trouble understanding how it could potentially damage the OPTs. Does having a magnetic bias present a problem? (Other than possibly magnetising the core)
I'm not sure how you degauss a transformer. Maybe you can just run it normally, but at low levels for several hours?
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