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Thread: Excessive Lav Pickup?

  1. #1

    Default Excessive Lav Pickup?

    Hello, I'm a video production specialist at an automotive marketing/consultation business in the US, and have a bit of a conundrum.

    Yesterday, I was setting up for a studio shoot (with a Canon 5D Mark III) and hooked the talent up to an Azden BT35 Wireless Lavalier microphone. When I he turned activated the microphone's power switches, he began peaking at every word, no matter how much I tweaked the audio levels on both the soundboard and the DSLR XLR adapter. I put that at bay for an hour and tested it later, when, rather than peaking, it picked up literally everything in the entire room. The microphone was seated atop a desk and when I tapped my foot on the floor, it was as if I had my ear RIGHT beside my shoe. Seriously, every sound in the room.

    Could there be any explanation as to why this microphone is being drastically sensitive? Granted, it does not have a windsock piece attached to it, but I highly doubt that would be the cause of it.

    Any help would be greatly appreciated. Thank you very much!

  2. #2
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    I don't know the Azden BT35 personally but with a wireless set up you have to balance three levels.

    1. The output from the microphone into the transmitter.
    2. The sensitivity of the receiver.
    3. The camera's (or sound recorder's) input from the receiver.

    It sounds like you have the gain on the microphone too high.

  3. #3

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    Rob are you thinking there is a gain switch on the mic it's self or do you mean the signal from the transmitter ?

    I'm not familiar with this make/model so I Googled it. The 35BT is the name of the transmitter pack. It does sound like the transmitter is sending too much signal. On my Sennheiser I usually set this to -12db. What setting is the 35BT set at ?

  4. #4

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    I read it as 'the mic was sitting on a desk'. If so this will also amplify every sound in the room. Rest it on foam and see if the sound peaks.
    My opinions are just that . . . Mine. It's not personal, but is based on my emotional and professional reaction to requested critique. If you choose to ignore constructive comments, I'll just assume you're a vanity poster and not posting to improve your filming and editing skills.

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  5. #5
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    Good point Zero. If the mic is resting on a desk it would act as a boundary mic.

    On the transmitter there is normally a mic gain setting, so that you can attenuate the input from the microphone before the signal is sent to the receiver. It sounded like the OP was saying that this signal was too strong and "peaking" by which I think he means reaching 100%.

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