Separate names with a comma.
The cap doesn't clear anything. AC still has clear exposure to the cathode.
A PR chassis has a pretty small PT cut-out, too. You'd probably be limited to 6V6 power tubes unless you wanted to do some cutting.
Behold! The Internet Archive Wayback Machine!...
Thanks, everyone, for your input!
I'm finally getting around to building something 5F6A/plexi-inspired, and I'm debating the input situation: traditional Bright and Normal channels...
Yeah, the original Two Stroke design has a 25uF and 0.47uF. Once you get greater than 25uF you're pretty much fully bypassed for guitar...
I think that's 50 Hz, which suggests heater wiring. Could be from a bad preamp tube, or could be from your heater wires interacting with your...
Build the amp you actually want! If you've nosed around inside amps before and you've seen what the inside of a Deluxe Reverb looks like and it...
Calculating a 75V drop across that 22K resistor* gives 3.4mA (believable for a full 12AX7) and about 256mW. I wouldn't use less than a 1W metal...
The two 100uF's in series give you a combined 50uF, not enough of a difference from your combined 44uF to notice in terms of filtering. Component...
It's worth a thousand words, right? Great job -- congratulations!
Other than cutting out when maxed, do the volume and tone controls act normally? The solder joints on your tone pot lugs look cold. If they look...
"Big tangled ball of crap" or not, almost everyone these days is going to tell you to ground your power tube screen filter caps with your power...
I just stumbled across the original voltage chart I made for my Weber 5F2A. I was getting 351V at the A node filter cap and 341V on the plate of...
I wonder if that's just a bad power tube. Try switching which socket each tube is plugged into. If the lower plate voltage follows the tube,...
Okay. Have you confirmed that none of the four inputs work now? If you really get pops from the grid of V2a and you've worked your way back to...
When you fired it up the first time, did you try both the channels and all the inputs? If they all functioned correctly, it is unlikely that an...
Were your tubes installed and warmed up before you took that ~500V B+ reading? If nothing is conducting, you will get a much higher voltage than...
Congratulations on finishing your amp! Regarding the hum, I'd get those twisted heater wires away from the speaker jack and down against the...
The Normal channel doesn't work because V1a isn't conducting. You can tell because the plate voltage doesn't drop across the plate resistor. (At...
Just to add to what some others have said, instrument cable is not designed for high power. So using it in a high power situation, like...
Looks like you're jumpering the screen cap negative to the PI cap negative, and connecting that to the OT/plate cap ground, which is good. Then...
Nice build! Really neat work. The 469V on pin 8 of your rectifier is quite a bit high, though. Was the power tube installed and warmed up when...
Apologies, but I have to ask -- are you remembering to set your meter to AC for the heater voltages? I've used the W022772, and it's completely...
Which PT are you using?
