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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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