Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: RJH Any suggestions or plans for a sign... -- 2/25/1999 9:47 AM View Thread

Re: Guitar signal splitter box

2/26/1999 8:38 AM
Re: Guitar signal splitter box
There is another variant of the splitter that uses transformers to make the outputs completely independent. The differential opamp version will cure hums up to the common mode range of the opamps, probably about 4V with a 9V battery supply. That may be enough if your amps have little leakage and are running from the same power outlet and phase.  
If the amps have leakage problems (that is, they are "vintage" two wire and have some minor problems) then you'll have much worse than 4V of AC leakage. In that case you'll have to go with the transformers.  
I either have posted or will post (have to look, memory is failing me) a schemo for the transformer isolated version.

R.G. Memory did fail me, it wasn't there... -- 2/26/1999 9:40 AM