The Amp Garage

Tonight's work... replaced both 25uF cathode bypass caps, replaced the .05uF coupling cap and 5M grid leak resistor on the instrument input. Results- strange ghost distortion is gone, and she's playing at full volume. Couldn't really wind it up as the kids are in bed, but I like what I'm hearing so...

Tonight's work... replaced both 25uF cathode bypass caps, replaced the .05uF coupling cap and 5M grid leak resistor on the instrument input. Results- strange ghost distortion is gone, and she's playing at full volume. Couldn't really wind it up as the kids are in bed, but I like what I'm hearing so ...

Thanks for the feedback. Turns out I made the typical newb mistake... just now I tried a new set of power tubes, and the voltages are spot-on perfect. Plugged in, volume is much higher. So I guess my big problem was bad power tubes (duh...) There is still some other stuff going on... a static-y whoo...

Greetings all... I've got a 5B3 that I'm refurbishing, and I could use a little assistance. Background on me: I've been messing with tube amps on and off for 7-8 years. I've built a few simple ones from scratch (AX84, 5F1, etc.) and I've refurbished a few broken old ones (Silvertone 1482, etc.) I'm ...

Ok, silly question time... I finally got round to looking at my box of parts to build my AB and had a quick play with the rheostat. I fastened it to the panel using a star washer and a couple of nuts, but the whole thing rotates when I turn the knob. If I hold the rheostat body in position, it's fi...

So it appears that V3a is indeed the overdrive gain stage. I replaced V3 and the hum went away. I had the amp serviced last summer, re-capped and re-tubed; too lazy to do it myself with such a crowded chassis. He used cheap Russian tubes in all the pre-amp spots; guess I should have known. Put an ol...

Hi everyone. I have a reasonable amount of experience with tube amps; I have build a single-ended amp from a kit, and I've done a refurb of a 60's Silvertone 1482. My other amp, a Mesa Boogie Mark 2 (version A) from 1980, is a beauty but I'm having trouble with the overdrive. Whenever switched into ...