Will this Sum stereo inputs into mono?
https://www.rolls.com/pdf/M_DB24.pdf
https://www.rolls.com/pdf/M_DB24.pdf
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Yes but do the left and right resister networks provide true summing before the input to the transformers is shorted out?
But would not out of phase stuff cancel each other out?Basically - but it's not really required - you could just join the inputs together in almost ALL cases.
But would not out of phase stuff cancel each other out?
This reminds me of a conversation I had with a sound engineer earlier this year. I wanted to use a passive DI box of my own design, but similar to the one we're discussing here, to mono up a DJ mixer to feed our PA. He insisted that that a simple passive network wasn't the way to do it, and that we'd end up with cancellation and phase problems (I can't quite remember how he phrased it). If it was anyone else I'd have dismissed this suggestion out of hand, but the engineer in question was an old hand and highly experienced, so I have to at least give his suggestion some serious consideration.
So basically you will lose some information no matter what?