XY coincident micing but with omnidirectional...

Discussion in 'Microphones (live or studio)' started by pcaberk, Jun 7, 2008.

  1. pcaberk

    pcaberk Guest

    what would happen in this case, if I where to mike a drum set and set the overheads up as 2 omnidirectional mics in an XY coincident position?
  2. Boswell

    Boswell Moderator Distinguished Member

    Apr 19, 2006
    Home Page:
    XY has no meaning with omnis - you would get basically the same sound from both mics. Because the two mics are never exactly coincident nor have identical characteristics, there would be phase isssues at high frequencies if you tried to mix the two signals or attempted to make a stereo image by panning.

    This contrasts with spaced omnis in A-B configuration, where the arrival time difference between the mics creates the stereo soundfield.

    There's an excellent guide to stereo recording in the Microphone University on the DPA website.
  3. johannes_o

    johannes_o Active Member

    Jan 8, 2008
    Umeå, Sweden
    I would agree with Boswell in general; omnis are not useful when doing X/Y stereo recordings. But I've used two DPA 4003 (omnidirectional 130V mics) with acoustic pressure equalizers (emulating a flush-sphere mounted diaphragm) in a vertical X/Y setup on acoustic guitar when I recorded a singer/songwriter demo.

    I feel that it gave me a great mono-compatibility while providing better sense of depth than one mic.

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