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CM311a distortion


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#1 Teddy3725

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Posted 09 July 2009 - 12:56 PM

I recently purchased a CM311A and I'm experiencing distortion occasionally. I tested it with a pro-tools digi003 unit and it was fine. On the job however I get distortion unrelated to the pop filter as it happens pre-moisture. I use a Mackie 800 power head or a Phonic 600 and it seems to happen with both heads. I'm thinking something with the phantom power as both heads are phantom powered, but it's just a hunch. I'm a piano/vocalist, solo or small group, no loud screams unless I fall off the bench. Any ideas? Thanks

#2 MChapman

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Posted 29 July 2009 - 03:44 PM

Here is a quick idea: put a 9V battery in the unit and turn on the battery switch and test it. If the distortion goes away, I would lean toward a phantom power problem. If it still has the same problem, then it it something in the microphone.
<span style='color:blue'>J. Mark Chapman
Crown Application Support Technician</span>