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A + (-B) = A - B ???

2006-02-13 by Martin Rudling

Hello.
I just had a conversation with a music store in Stockholm, about my 
connectors/intentions, which ended with the guy hanging up on me! He 
couldn´t understand what I so ambitiously described to him, and got mad when 
I tried to insist.

So I will try with you guys.

Using the A-134 VC-panning as reference, because it has what I will need as 
a connector/adapter onboard. It has 3 outs, left right and MIX output. I 
guess that this one acts like a crossfader as response for  panning 
modulation. Which means: when PAN goes to RIGHT the LEFT volume 
decreases/disappeares, and then the oppisite will procedure occurs. Other 
words

CENTER POS: ½L + ½R = 1       <<<ALT>>>        CENTER POS: L + R  = 2
PAN RIGHT: 0L + R       = 1        <<<ALT>>>        PAN RIGHT: 0L + R  = 1
PAN LEFT: L + 0R         = 1        <<<ALT>>>        PAN LEFT: L + 0R    = 1

BINGO!!! Specially if the first alternative is the case (??), ((the 
"swapping" application in mind, if the second alt is the case, i will manage 
with a combined vol mod & panner, volume added as the panning leaves the 
center))

Problem: I have a module that does panning left-right, but it does not have 
the MIX output (only regular L-R), can I create it by myself, by just 
applying a stereo to mono adaptor as in the attached picture? Are the 
signals mixed properly in this simple device, so that I gain a crossfader 
out of a panner???

Very thanks!

Martin



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