
SouthSIDE Glen
independentrecording.net
Miro, slow down and read fully and carefully; you're confusing yourself for no good reason.I get all the math...that's not the question, but AFAIK...the "agreed upon" monitor/mix position setup always indicted an *equilateral* triangle to be used.
So...I don't get how only the apex angle and the two sides from it are important but not the other two angles and the length between the speakers...?
The apex and two sides are important only in defining any triangle. When you know those values, you don't need to bother specifying the rest, because there's only one waythe rest can be. That's the only point there. Like you yourself say, when you know you have a (for example) 60° angle and two sides of the same length, you don't need to specify the rest of it, because there is only one way the rest of it can be.
It's like saying I need a mannequin that's 6' tall, with legs that are 34" long. You don't need to bother specifying how long the upper half of the body needs to be, because there's only one length that will satisfy those conditions.
But the triangle does not need to be equilateral in order to produce a true stereo signal, because all that really important is that the distance from the listener to the two speakers be equal. Whether the apex angle is 50°, 60°, or even 90°, as long as the distance of each leg of that angle remain equal to each other, the stereo image will remain properly balanced, with no loss or shift of the center of the image (or any other part of it, FTM).
60° is usually agreed upon as more-or-less optimal because it's wide enough to provide a wide enough stereo field to easily perceive the difference between, (just for random example) a 0% pan and a 10% pan. But one can also tell that with a 70° or 75° angle just fine. You get smaller than 60°, and the "resolution" may start getting kind of tight to do that confidently, and OTOH, if you get too large and the exaggeration can get kind of, well, exaggerated. But that doesn't mean one can't mix perfectly well at angles other than 60°. There's nothing sonically or acoustically magical about an exact 60° spread...but it's a good ballpark to specify.
G.
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