Canon XH A1 Microphone Preamp Question

Discussion in 'Professional Video Production' started by Powell, May 29, 2007.

  1. Powell

    Powell Guest

    Purchased a new video camera with manual XLR
    inputs. However the microphone preamp has such
    little gain that I'm forced to use an external microphone
    preamp as a head-amplifier to drive the camera's
    XLR inputs.

    What type of microphones have sufficient gain to drive
    these XLR inputs? What doesn't work: Shure KSM 27
    (104 ohms), AKG C420 (200 ohms) and Sennheiser ME66
    (200 ohms). A phone call to Canon tech support, they
    didn't have any information on the microphone preamp
    specifications. It was their_understanding_ that any 600
    ohm microphone would work.
     
    Powell, May 29, 2007
    #1
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  2. "Powell" wrote ...
    Impedance by itself isn't really going to tell you anything
    about the output level and/or sensitivity of a microphone.
    There ARE specifications for sensitivity if you want a rough
    idea of whether certain mics are more sensitive than others.
    But it can't reliably predict which microphones you will find
    work "properly" with your camcorder.

    You are better off using almost any external mic preamp
    than the one that is in a camcorder. Even high-end cam-
    corders have very basic sound capabilities. The sound
    system is pretty much an afterthought and we're lucky
    they work as well as they do.

    Recomended reading: "DV Camera Audio: Real Numbers,
    Real Recommendations" by Jay Rose
    http://www.dv.com/features/features_item.php?category=Archive&articleId=23902929
     
    Richard Crowley, May 29, 2007
    #2
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  3. Powell

    Mike Kujbida Guest


    Did you do as Phil suggested in your post to RAMPS and check your switch
    settings? For example, heck that the input switch is set to Mic in and
    that the 20 db pad is turned off.
    I looked at the specs for this camera and there's no reason why any mic
    shouldn't work.

    Mike
     
    Mike Kujbida, May 29, 2007
    #3
  4. Powell

    Powell Guest

    Thank you.
    What about the quality of the ADC? Do you think that using
    a external microphone pre-amp to the camera's line input
    (digitizing) is acceptable (high fidelity), as opposed to recording
    to external device?

    Thank you.
     
    Powell, May 30, 2007
    #4
  5. Is running double-system sound worth it for your situation?
    Double-system sound (recording sound on a separate sound
    recorder) is still the standard of the industry for high-budget film
    and eposodic-TV production, even when shooting on high-end
    camcorders. At least that seems to be the consensus over on
    news:rec.arts.movies.production.sound
     
    Richard Crowley, May 30, 2007
    #5
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