Vintage Pioneer SX-838 receiver- I MISDIAGNOSED !
"William Sommerwerck" wrote in message
...
I don't know why Willaim Watson Michael Dayton-Wright chose those
particular
switches. If you want to damn him, damn him for not installing the caps.
Yep I would, don't you?
As for the power amp... At the time it was designed, there was a lot of
arguing about slewing-induced distortion, TIM, and the like. (There were
tube power amps that suffered from these problems. Dig through your
early-80s JAES issues for an article about one.) The assumption was that,
the wider the open-loop bandwidth, the less likely TIM would be a problem.
So Lux used triple-diffused RF power transistors -- despite the common
knowledge that they could be blown by RF transients. That was the cause in
three cases where the output transistors blew -- not audio transisents.
And how trivial to filter RF from a power amp input. Even cheap amps do it
successfully without affecting the audio range.
MrT.
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