Not an expert, but I'm pretty sure that won't allow you to run a tube amp with no load.
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R.G. IS an expert...Cathode Ray wrote: ↑Wed Sep 06, 2023 2:33 pm R.G. wrote: ↑Wed Sep 06, 2023 8:46 am
Open the feedback loop, if there is one. The AC30, for instance, does not have output stage feedback.
Not an expert, but I'm pretty sure that won't allow you to run a tube amp with no load.
If we take him at his word, he is passing signal through the power tubes.maxkracht wrote: ↑Wed Sep 06, 2023 3:09 pm R.G. IS an expert...
Anything connected to the output of the power tubes is a load. So, if there is no load on the output of the amp, the power tubes aren't being used to produce that sound. He could still have an amp that reconnects the power tubes when it's not in the setting in question and operate like a normal amp. He probably needs the power tubes plugged in to keep preamp voltages at a reasonable level, so they are being "used" even if they aren't passing audio.
Any of these points could be incorrect in relation to his amp because in the few minutes I watched, that guy was using technical terms as jargon instead of their actual meaning. So something like "load" might not mean anything. Only way to know for sure what is going on is to buy his amp and reverse engineer.
He answers questions pretty reliably, if not in a "cagey" manner.
Connecting this with something else the guy said in another video..R.G. wrote: ↑Wed Sep 06, 2023 10:21 pm It may well be that opening the feedback loop that most modern output stages use won't absolutely allow it to be non-destructive to run without a load impedance for ALL amps. But it is certain that for some amps, the path to death from no-load conditions is through oscillation.
that's Ossie - right here in Raleigh. known him for yearsCathode Ray wrote: ↑Mon Sep 04, 2023 3:03 pm A guy in Australia is doing this with amps he demonstrates on his YouTube channel.
Yeah, don't get me wrong, I like what he's doing.