Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: Jim S. I wouldn't worry about the filament... -- 5/10/1998 10:47 PM view thread

Re: Marshall 50W amp/preamp project

5/11/1998 2:06 AM
Re: Marshall 50W amp/preamp project
Hmmm, both your and HM's replies sound distinctly possible. I have 2 power transformers (HT & LT) which are both horizontal, as is (you guessed it) the output transformer. However, I *think* the amp that used this output transformer before also used to hum so it *could* be an imbalance in the windings, except that if there's no HT or LT then that must mean it's induced...  
I'll try moving the output transformer first - it'll be less work than the power ones. I'll let you know what happens...  
- Paul