Questions about Forssell summing schematic

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crazytooguy

Well-known member
Joined
Dec 9, 2005
Messages
57
Hello. Pardon what may be really dumb questions, but I've been looking at the Forssell schematic for a passive mixing network and a few things about it puzzle me.

First, here's the schematic I'm looking at: http://www.forsselltech.com/8chsum_1.pdf

Now, is this a balanced design (I'm thinking no)?

What does the first 5k pot do? It appears to put the pot across the pos and neg legs of the balanced signal. Is this correct?

Thanks for the help!
 

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