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Originally posted by Tone Meister
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nosaj
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Couldn't a properly sized volume pot throttle the amount of signal to hit the 6v6?
nosajsoldering stuff that's broken, breaking stuff that works, Yeah! -
Look at the NFB circuit. Start at the cathode of the V1b. You have a 1500 ohm to ground from there. You also have the 22k going over to the OT. The OT secondary winding has essentially no resistance, at least low enough to ignore. That winding is also grounded. That all serves to put the 22k in parallel with the 1500 ohm. Calculate those in parallel, and you get... 1.4k
Always consider parallel circuit paths when measuring parts in circuit.Education is what you're left with after you have forgotten what you have learned.Comment
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There are lots of ways to lower output. Also check to see if they are running the 6V6 in triode mode. Is the screen connected like the original schematic?"I took a photo of my ohm meter... It didn't help." Enzo 8/20/22Comment
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"Also, the NFR is 1.4K and not 22K."
A few posts earlier you said it was 22k measured out of circuit?It's weird, because it WAS working fine.....Comment
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Unrelated to your question, but that cathode resistor and cap sandwiched together is a horrible idea!"I took a photo of my ohm meter... It didn't help." Enzo 8/20/22Comment
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lol. Somebody start a 'what's for dog's supper' thread.
Originally posted by Enzo
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Amp belongs to a buddy. He brought it by for me to "clean up." I want to sort out the power issue then start cleaning up the shoddy work.Originally posted by The Dude View PostComment
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Just a thought. The entire circuit is 12 resistors, and 6 caps. Might make sense to just gut it and build a new circuit.Education is what you're left with after you have forgotten what you have learned.Comment
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Sorry I asked!
I'd start here:
https://www.angela.com/5f1tweedchamp...cuitboard.aspx
Edit:<simulpost> Looks like Enzo beat me to it."I took a photo of my ohm meter... It didn't help." Enzo 8/20/22Comment
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Don't think I haven't already considered it. But my inquiring mind still wants to know what the builder did to purposely limit output to 1 watt. Can't be much, but I'm missing it.Originally posted by Enzo View PostComment
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Oh I am all for you figuring it out, I am interested too.
I was thinking about cleaning up the mess, it seems that just rebuilding might make more sense. But DO solve the problem first.Education is what you're left with after you have forgotten what you have learned.Comment
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Even went to the trouble to notate so in two spots
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