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I am working on a preamp, and Ive gotten as far as input and the first stage. im taking the plate straight to the coupling cap into the phase inverter for the sake of making sure all is good thus far. I get the general hum and noise that you always here, and when I tap on the pickups i get the clicking sound. When I turn the amp OFF, about 2 seconds after I get sound. I suspected there was too much of something, and as the amp died down it equaled out and suddenly sound. But I mean, Ive hardly done anything. What am I missing?
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Update, I put a 2Meg resistor as the plate resistor, and now im getting sound. Not good sound(what you would expect at this point) and real noisy, but still sound. The plate voltage is only 64vdc. Whats going on here? -
Can you imagine me telling you to visit me in Cleveland, giving you instructions that said - my house is two doors down from the corner of some main street. That wouldn't tell you much about where I lived. You need to present some sort of schematic of what you built.
But from your description, I am pretty sure you don't have complete DC circuit paths.
2 MEG plate resistor!!!????!!??! That alone won't do you any favors. Plate load resistors in typical guitar amp input stages are more typically 100k to maybe 220K.
We have no idea what your phase splitter circuit is, but there needs to be a resistive path to ground from the grid.Education is what you're left with after you have forgotten what you have learned.Comment
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The reason I put a 2M plate resistor in there was simply for experimental purposes. I was using a resistor sub. box and i was just switching different values. The phase inverter is a Fender long-tailed circuit. Ill mess around with it some moreComment
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