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  • audio issue with Sennheiser mics and HPX170

    Posted by Jack Niedenthal on January 8, 2014 at 5:42 am

    I was filming the other night with 2 sets of the Sennheiser ew 100-ENG G3 Wireless Clip-On Lavalier Microphone Sets. The mics and their bases were set to different frequencies and I used both 1 & 2 XLR inputs for the mic base units on my HPX170.

    I set the channel 1 selection to input 1 and the channel 2 selection to input 2 (see photo) and put the input 1 and input 2 switches both to “on.”

    What was strange was that even though I was 15 feet or so away from the people talking, after downloading the film I shot into FCPX, it sounded as if my voice was mic-ed up also, almost as if something on the camera was recording my voice, it was loud and clear… It wasn’t a big issue because I was able to take those 2 tracks out of the sound (those tracks had some unwanted wind also), and the sound from the 2 lavalier mics sounded fine, but why was this happening???

    Jack Niedenthal
    Microwave Films of the Marshall Islands
    http://www.microwavefilms.org
    https://www.microwavefilms.org/Crickets.html
    iMac i7 using Mavericks 10.9.x, HPX 170 using only one 64GB card
    I live on an island in the middle of the Pacific, YOU are my only resource.

    Joel Freedman replied 12 years, 4 months ago 3 Members · 3 Replies
  • 3 Replies
  • Chris Tompkins

    January 8, 2014 at 2:46 pm

    For one, you should not be running Phantom Power to those mic receivers.

    Chris

  • Jack Niedenthal

    January 8, 2014 at 8:34 pm

    Thanks for responding, Chris. Geez. Didn’t even think of that. What issues would be caused by running unneeded phantom power to those mics in the process of filming?

    Jack Niedenthal
    Microwave Films of the Marshall Islands
    http://www.microwavefilms.org
    https://www.microwavefilms.org/Crickets.html
    iMac i7 using Mavericks 10.9.x, HPX 170 using only one 64GB card
    I live on an island in the middle of the Pacific, YOU are my only resource.

  • Joel Freedman

    January 10, 2014 at 4:52 pm

    If you were recording 4 channel audio, then it was probably the internal mics recording to channel 3 and 4. I think this is automatic in HD, and optional in DV mode

    Joel Freedman
    http://www.2hungrydogs.com
    twitter.com/2HungryDogs

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