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In Reply to: RE: Amplifier problem posted by John Elison on June 3, 2016 at 10:23:53:
"my guess is that you have triggered a thermal cutoff by overheating the amplifier."
That's a plausible explanation for a well engineered amplifier, but this is a cheap Chinese product.
"I'm wondering why anyone would operate any audio power amplifier at 95% power continuously. This would never happen when playing music. Furthermore, I don't think any audio power amplifier is designed to do that, but I could be wrong."
I build my tube amps with over rated power supplies, e.g. a 250mA plate transformer when 200mA is drawn by the circuit at full power. I generally break in an amp by injecting a sine wave sufficient to take the amp to clipping and then back off until I see no sign of distortion. I can leave it like that on the bench indefinitely. I check for signs of overheating and for distortion of the wave. High quality transformers barely get hot enough to make one's hand uncomfortable.
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Follow Ups
- RE: Amplifier problem - Palustris 10:41:43 06/03/16 (2)
- RE: Amplifier problem - akolegov 02:45:06 06/04/16 (1)
- RE: Amplifier problem - mrdavis842 14:24:10 06/04/16 (0)
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