Is it possible to run 2 Amp11-HV amps from a symmetrical power supply?

[pkcain]

Okay, so this just goes to show I don't know much but if I wanted to run 2 amps from a +-50v SMPS can that be done? One positive, on negative?

Please don't flame me (to bad!).

Thanks,
PKCain

[V-bro]

Nope, this has been asked before, and it's not a stupid question because some applications can run that way. The problem here is that through the audio the ground will be connected between both boards. This means that if you have negative voltage on one board as ground it will be shorted to the real ground on the other board....

[quixfz]

makes sense.

would it be possible the connect one channel reversed (- to + and + to -) and also swap the speaker connectors on that amp? hmm, probably wont work.

but using isolation transformers on the input should work.

[V-bro]

With isolation transformers it would work, but I still don't recommend it....

[Jan]

If the transformer has two separate secondary windings (4 wires), not joined in the middle (3 wires) then you can use the two windings in parallell, instead of the usual series connection.

You can either use the windings independently, joined at the ground side, and you would have 2x+50
or
fully in paralell, for one single +50V supply with double power rating.