Model T making weird noises.
Posted: Tue Jul 05, 2016 8:01 am
I noticed a few days ago that my amp would hum pretty loud from time to time when we weren't playing. Sounds like 60 cycle hum. It never motorboats though, just a constant hum that comes and goes over the course of a few minutes. Then yesterday I was playing around and when I go around the 12th fret on the higher strings I hear a faint octave up. Tried swapping the stock 60's of for a new set of JJ KT88's and there wasn't that much of a difference. I did find one of my preamp tubes was microphonic though. Swapped it out and the hum isn't as bad but I still get the octave up. Tried it on different cabs and in different rooms and it's the same. It's time to get it recapped I imagine but I wanted to rule out any other potential causes.