Let's Get Technical > Power Amp Tech
ADA B200s: Channel A issues
MarshallJMP:
So it's actually a mechanical hum?
Iperfungus:
--- Quote from: MarshallJMP on February 14, 2017, 02:58:42 AM ---So it's actually a mechanical hum?
--- End quote ---
Yep...it looks like...
I will collect some pictures from outside and inside...
rnolan:
Mike has some experience with changing the output jacks. They have to be switching jacks (to cut the channel when nothing plugged in) and also plastic/insulated from the case.
From what you've said, new jacks (input and output) and new pots should (?) sort out the slight channel difference. If the transformer proves to be a problem, you can get a toroidal to fit. Mounts with one centre bolt from the top. We did this with a US model B200s so it worked here (240v) :thumb-up: .
Iperfungus:
--- Quote from: rnolan on February 14, 2017, 03:44:55 AM ---Mike has some experience with changing the output jacks. They have to be switching jacks (to cut the channel when nothing plugged in) and also plastic/insulated from the case.
From what you've said, new jacks (input and output) and new pots should (?) sort out the slight channel difference. If the transformer proves to be a problem, you can get a toroidal to fit. Mounts with one centre bolt from the top. We did this with a US model B200s so it worked here (240v) :thumb-up: .
--- End quote ---
Good to know, Rich! :thumb-up:
Where I can get a 220V/50Hz tranny that fits my B200s?
Do you mean these jack connectors?
http://www.banzaimusic.com/Switchcraft-SC-NL-112AX.html
About pots...A = linear?
Would this fit? Or shaft is too long?
http://www.banzaimusic.com/Marshall-Pot-10k-lin-16mm.html
MarshallJMP:
These should work too
http://www.banzaimusic.com/Alpha-16mm-split-shaft-10k-log.html
As for the jacks I need to see a pic of them.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version