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I'm gonna shotgun all of the caps. I don't know why but I feel like Sangamo caps are shit. This is only my second tube amp but I've got the schematic and I feel really good about that. I'll be checking every one of the carbon resistors along the way. There is one (R25) that was mega crispy...

My buddy said he played it and it sounded great. He just stopped playing it because he knew it needed recapped and he's got a bunch of other good amps. He used to repair and build them in Utah.

My buddy gifted me this old danelectro amp. I've got plans to restore it. Looks all original inside including the rather large amount of mouse turds. Speakers only had a small tear. Cabinet is made out of particle / chip board. Makes for an incredibly lightweight but not particularly strong...

http://www.geofex.com/

I knew better....but I said it anyways. Typical behavior on my part tbh.

"Just the tip, and only for a minute!"

I made the ABY w/LEDs from GGG. I also made/use their active and passive DI boxes. Great resource!

Alright, calling it solved. The preamp tube can be either a 6C5 or a 6J5. Just needs to be a single triode. That being said, not much gain at all. My buddy who gave me the project believes this was an external speaker for a projector on a school AV cart back in the day. It originally had an...

I totally get phase alignment and how it applies to NFB. I don't see how / where V3 is getting it's DC? I sure appreciate you taking time and breaking this down for me amigo! I feel like a teenager with my first motorcycle torn apart in the backyard and from over the fence, the neighbor...

Ok, that makes sense. Cathode is the ground for the tube. So then where is the plate getting it's dc from in the pre tube (V3) in my circuit? V3 plate voltage is 3vdc when it's off. It jumps up to 250vdc on warming up. Then settles at around 48vdc idle. If I put a 1khz tone at the input I...

Ok, I've ordered the five resistors in both Carbon and Metal. I've also ordered a new rectifier but I'm skeptical for this to fix anything as I've got seemingly solid B+ on the 6v6. What I'm having trouble wrapping my brain around is WHERE is the cathode power coming from for both the pre and...

Update: I changed the last two coupling caps @5nf (at least I think they're coupling caps) and it's a lot cleaner tone but still really soft. The 6C5GT works! as a replacement preamp tube but there isn't a change in loudness. I'll take some voltage readings today but the only thing left is the...

I'm sorry Harry, that sucks! I love the click on these gems: https://www.taydaelectronics.com/3pdt-stomp-foot-pedal-switch-red-body.html?qty=1

I too know nothing! I sure appreciate you taking some time on this exercise. The 12sf5 won't work due to the pinout. But the 6p5GT is SPOT ON! Great stuff! It seems this style base has filament on 2+7 while missing pins 4+6. Plate is on 3, Cathode on 8 and grid is 5 I just ordered at 6L5G...

I came across this page: https://rec.antiques.radio-phono.narkive.com/lmYSyNjL/identify-unmarked-vacuum-tubes Which pointed me to this: http://www.tubebooks.org/tubedata/ge_essential_characteristics.pdf Which has handy little diagrams to help you narrow down the possible tubes based on pinout...

Calling a file final is the surefire kiss of death "do it again" in my experience. I had to stop calling the deliverables that a decade ago.

WIMA and Kemet for longer term performance IMO. You can increase voltage rating without affecting anything but the size they take up in the build. For tolerance just order extra and sort them yourself with a multimeter. Wimpy leads break too easy. Stomp Box Parts is an excellent source for...

I haven't bought from them in a couple years now, but I also got my vibe bulb and the photoresistors from them. I got a spool of #42 enameled wire for a pickup coil. https://www.digikey.com/en/products/detail/remington-industries/42SNSPR-125/11614928

So scary! That's great advice. I'll be sure to not refrigerate. My father in law said the same....the prep is the worst part. My artist buddy said it's the best 10 minute nap of your life. 😂😂 I had no idea Hoffman wrote that. Now I gotta donate something. That guy IS great! A wonderful...