Mic noise - phantom?

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jrmintz

Well-known member
Joined
Jun 4, 2004
Messages
998
Location
NY
Hi all,

I was recording a vocal the other day with an old 414 with a brass CK12 capsule with pop filter. I thought the songer was too close to the mic, so I had him back off a bit. After that there were a series of random thumps and clicks spaced roughly 20 or 30 seconds apart, not really loud but bad enough to make the track unusable. My first thought was that the capsule might have gotten a little wet and then dried out, but I also thought it might be the phantom power - my AC power hiccups a lot. It doesn't seem to bother most of my gear but I thought the hiccups might have been long enough to quickly power down the mic and back up. I used an outboard phantom supply and it seemed fine after that, though I'm not sure if the power got better, the capsule dried out, or the outboard phantom supply was less sensitive to power line problems. Any thoughts?

My question is: is there a way to modify or build a phantom supply so it is less sensitive to quick changes or short dips in line voltage? Battery power?

Thanks,
 
Well, if you have enough upstream unregulated voltage and energy storage, you should be as immune as you like.

If the existing phantom supply is getting really old maybe some of the 'lytics are drying out and losing capacitance.

Brad
 

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