Tube Amp Archive

thank you, everyone for the assistance. here's got finally got me straight: 1. as I was pondering what to do about all this, I had my phone connected to a little bluetooth amp I have in my shop. I noticed as the music played that strange signals would appear on my scope in time with the music. someh...

Thank you both for the replies! I think my oscillator is the problem, but It gave me a clean sine wave a few days ago. It's old, I borrowed it from work and it probably hasn't been used in at least 20 years. as a sanity check, does my connection seem legit?: the oscillator: hposcillator.jpg I have a...

Hello Amp Garage, this is my first post here. I recently converted a JTM45 I built about 10 years ago into a Dirty Shirley after watching Jason Tong's video on youtube about the conversion process. I also recently acquired an oscilloscope, and found a post on the Marshall amp forum about biasing an ...