Thanks so much Marc! I had very bad 50 Hz (Europe) plus strong overtones hum on my Champ, depending on the volume knob position. For the moment I just removed the power cables from the switch and connected them (switching the amp on by plugging it in). What remains is a 100 Hz hum, less loud, which I think you do not cover in this video. Thanks again.
With moving the output transformer off of the chassis, does that create a safety hazard being that the chassis is grounded? Did you end up running a ground wire back to chassis?
you could do that but it was further away from the coupling and was easier to mount on the wood...but your suggestion is better if you can find a place for it
@@StudioDevil1 it decreses with the square of the distance, so just a little more distance can make a big difference. So can the orientation of the power transformer and the output transformer, which tend to couple to each other. There is usually even more benefit to moving the power transformer away from everything. Then elevate the heaters and shield the input and everything to the first grid.
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Thanks so much Marc! I had very bad 50 Hz (Europe) plus strong overtones hum on my Champ, depending on the volume knob position. For the moment I just removed the power cables from the switch and connected them (switching the amp on by plugging it in). What remains is a 100 Hz hum, less loud, which I think you do not cover in this video. Thanks again.
With moving the output transformer off of the chassis, does that create a safety hazard being that the chassis is grounded? Did you end up running a ground wire back to chassis?
Did you wire the power plug like a vintage amp or did you run the power wire in a modern way?
Why don't just put the transformer at the other side of the chassis, instead of the bottom of the cab?
you could do that but it was further away from the coupling and was easier to mount on the wood...but your suggestion is better if you can find a place for it
@@StudioDevil1 it decreses with the square of the distance, so just a little more distance can make a big difference. So can the orientation of the power transformer and the output transformer, which tend to couple to each other. There is usually even more benefit to moving the power transformer away from everything. Then elevate the heaters and shield the input and everything to the first grid.