Hum from mics in my recording setup

Pro Audio Asylum

Pro studio recording equipment and music production/industry.

I have a Zoom MRS 802 digi multitrack recorder and a Behringer 1222 FX PRO 12 channel mixer in my home studio. When I plug in a microphone to either one I get a hum in my headphones. It is only noticeable when I turn up the gain or the volume. I tried completely removing the ground so that I wouldn't get interference from anything around it. I still got the hum. The only way I can make the hum go away is to aim the mic parallel with the equipment, it's like I find a sweet spot and the hum goes away. obviously this is impractical, for instance, if I am micing a drum kit and can't be at the mercy of keeping mics parallel to the equipment. Also, the hum gets louder when I bring it up to my mouth (closer to the headphones).
Does anyone have any ideas? I'm desperate:(

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Topic - Hum from mics in my recording setup - rekordboy 20:30:57 06/29/06 (5)

Re: Hum from mics in my recording setup - Bill Fitzmaurice 08:56:48 06/30/06 (4)

Re: Hum from mics in my recording setup - rekordboy 10:38:13 07/01/06 (3)

Re: Hum from mics in my recording setup - Top Jimmy 16:35:53 07/02/06 (1)

Re: Hum from mics in my recording setup - rekordboy 15:01:03 07/04/06 (0)

Re: Hum from mics in my recording setup - Bill Fitzmaurice 12:04:48 07/01/06 (0)

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