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Small voicetracking/production studio project

R

river radio ranch

The room is built around a Yamaha MG12/4 mixer....A Broadcast Tools CC-IIA console controller...a pair of AKG Perception 100 mics with shockmounts...
I plugged in just one mic cable, turned on the phantom power on the board, put the fader at zero and began turning the trim...
as the voice came up, so did a ton of whooshing background noise....
I moved the mic around as in away from a 17 inch flat panel monitor about three feet away..no change...
I turned it on and off again...unplugged and plugged back in....and one time, the noise disappeared and the voice level was great...then it changed back quickly...
I have swapped out the board, mic cable...mic, and there is no other mic plugged into the mic inputs...
Ideas/suggestions?

thanks
 
It looks like you tried to go through a trouble-shooting routine of eliminating the possibilities, but your description got a little frantic. I'm not sure how to read "I swapped out the board" for example.

I assume you tried leaving the CC-IIA out of the circuit and plugged the mic directly into the MG12/4?

What happens to the "whoosh" if you turn the gain down on the mic input channel?

What happens to the whoosh if you turn the MASTER gain down?

Do you have an old dynamic mic you could plug in with the phantom power off?

Do you have any other pre-amp or mixer you could plug into your computer?

And what happens if you are attempting to record and the whoosh is there, and you just pull the audio cable out of the input-jack on your computer?

Keep up all these elimination processes and sooner or later it will become obvious WHERE the whoosh starts. Your most obvious choices are: in the mic, in the CC-IIA, in the MG12/4, or in the computer sound card itself.

Let us know what you find. I love a good mystery!
 
By noise, do you mean hiss etc, or background noise like fans and the like? You're using a condensor mic in what appears to be a less than perfect room. Nothing strange about getting background noise. And the mixer's preamps are probably not the best considering the price of the unit. On the other hand, the AKG mics shouldn't require THAT much gain seing as they're condensors and those usually don't require as much as dynamics... not the ones I've used anyway. I'd try and improve the room and/or switch mics. After than, add a compressor unit with a noise gate that helps cut out the background noise.
 
I left everything in line and on...and lo and behold...background hiss disappeared...
I appreciate the input...
I ran the with and without tests including the mixer itself the first day when I pieced it all together..
Since then, to date, very clean...
very usable..
thanks again!
 
I forgot to share all the pieces...
It appears to have been the phantom power portion of the Yamaha...
I plugged the AKG's into a Spirit Notepad and clean as a whistle...
I had already swapped out the cables...so I just left the room with the unit on...
Next day...clean, quiet, playing nicely...
and has since...
Would I trust this setup on the frontline?
aah, no
thanks again....
 
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