Thread: RCA 1YB-11 rumbling sound
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Old 06-18-2016, 11:58 AM
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Electronic M Electronic M is offline
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Location: Pewaukee/Delafield Wi
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One thread collects info on the project better.

What you may have is a microphonic tube. Any vibration from the motor, the mech, flicking the tube etc. is being converted in to a signal voltage by the tube and passed on to the other amp tubes.
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What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
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