mic noise

[scrubs]

Is it humid where you are located? Sometimes, moisture on the capsule will cause additional noise. You could try sealing the mic in a zip-top bag with a couple of desiccant packets for a couple of days.

Also, check cables, etc. that may be the culprit.

If all else fails, time to go mic shopping.

[roxxon]

NADY 1100s are decent, afforable tube mics.
I have two of them and I like the way that they sound for certain applications.
That being said...

That model has problems with it's power supply.
That could be it.
You might have a deffective one.

Try another power supply on it.

[reverbpervert]

Hey there. Maybe someone could help me. I bought an original c451, and when I first used it (on hi hats) it sounded exactly how I expected it to sound. Clear, open, great response, etc. Upon the next use, I had to crank the gain of my FOH console, an Allen & Heath GL3300. I removed the - 10dB pad, and I had the same result. I tried different cables, snake channels, direct into console, etc, with the same effect. It does output at full gain, but it is obviously noisy with that level of gain, as well as some minor low frequency loss. When I got home from my gig, I plugged it into my Tascam DM24, and found the same effect. Now, I noticed that it was somewhat of an antennae for transformer noise, from that console and another crappy one that was next to it, so, I guess it is more EMI than anything else. The mic did not behave this way, and I think that one of my stagehands was having trouble connecting an XLR to it. (read as, he may have forced it in.) I got it apart, but it doesn't appear to have damaged the connections. Is it possible that it decided to crap out at that moment coincidentally? Is it a recap job on the whole mic, or is the problem greater than this? PLEASE HELP!!!

[uncle duncan]

Could also be the tube. You should have spares anyway, so get one and swap it out.