Why you should never use multi pattern mics

[k brown]

Most sources are large enough that that is not true for the entire soundboard, all the strings, etc. Probably brass instruments or voice, where the sound nearly all comes from a relatively small opening fit the criteria, but certainly a large ensemble in front of a stereo pair would not.
Just something to keep in mind when thinking about what spacing you can tolerate and what situations it may or may not cause a problem.

This sort of thing is only ever an issue in theory, and virtually never audible in practice.

Take for example using two LDCs in MId Side, where the usual placement is one above the other; a considerable vertical dispacement between capsules, but sounds just fine when matrixed together.

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Not to mention the fact that someone as serious as David Josephson wouldn't bother with such an idea if it had any serious phase issues in actual use (the C700A and C700S).
https://soundliaison.com/products/carmen-gomes-inc-dont-you-cry


Or Schoeps, with the M 201 (which is what inspired the Josephson).

Sound doesn't happen on paper, but in our ears.