Sumo Athena II balanced?

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Hello,
finding no diagram online, I copied one channel of my preamp.
In the owner manual, it talks about an option to balance the outputs.
According to you, you think, it modifies the board, changing the connections, or maybe it's another board.
Please, if possible according to this scheme, someone would give me the solution?

Thank you
Best regards
sefano
 

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nobody

Hello,
So, no one to give a constructive opinion?
See this beautiful drawing, and schema (my first, done with software:drink:), although this is not the diy, it could be.
Where are the :king: of electronics?
Please tell me if the modification is possible.

Best Regards
stefano
 
I don't see an easy way to get fully differential outputs "at the same time" (second to last paragraph in the owner's manual page) using fewer than 10 additional transistors. You'll need to build one NFB loop incorporating the positive output, and another NFB loop incorporating the negative output.

The obvious way to get two NFB loops is to build two of these Sumo 10-transistor discrete opamps. The first opamp operates at gain= +9.06 and the second operates at gain= -9.06. (R59 + R69)/R69
 
Hello transistormarkj,
So from what you say, they would have another board for balanced release.
I thought it was doable with it, anyway, without help, I would not come there, I do not have enough knowledge.
It's very simple, it will remain as it was thought, by the way, it works very well, but rather that my amp has an interface problem.
Thank you for yours response.

Best Regards
Stefano
 
the RCAs can be used alongside the Balnaced impedance outputs.
This indicates to me that the Balanced outputs have their own driving (active) circuits quite separate from the RCA outputs.
You would need 4 channels of driver (or two channels of balanced driver) to add the balanced outputs alongside the RCA outputs.
 
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