It should be fine as long as your not using too many connectors/cables, everything is wired/grounded good, and the cables/snakes are in good shape. Right now I'm working on a musical were there are no mic jacks up in the fly space or grid area. The designer's design called for three hanging mics. Instead of running a long, painful "buzz-worthy" run of
XLR from the stage to the grid and back down. And remember, thats not one run, not two, but three long XLR runs the grid and back down. The problem was solved by dropping a 200' snake
down stage from the grid. Sounds and works fantastic, no buzzing or anything. Now think about this, from mic to console (start to end)...
25' perm mic cable attached to Audio Technica AT853Rx Microphone
25' XLR Cable (connected to
junction box on grid)
200' Snake Cable (from Junction Box on Grid to DS mic jack)
About 70' XLR run (from the DS jacks to the patch rack at stage left)
1.5'
TRS Patch Cable (patch rack)
100'-150'? XLR run (from patch rack to control booth muiti-pin jack)
15' Muilti-Pin to XLR Snake in booth (from muiltipin jack to console)
That's roughly a whopping 461.5 feet from the hanging mic to the consoles input. I didn't notice any problems at all. As long as your using good cables you should be fine. Think about it this way, just imagine the cable runs on tour. While some are going digital and serializing their analog signal, most aren't do to latency problems. Anyway, that's a smart idea mixing from the
house, I wish I could make that permanent at my facility. Mixing from a tiny window just isn't fun. Even alone setting up the console and all it's gear is so much work to begin with, you gotta put it all away after a show. Security is important, you can't just leave it sitting out. It's a bummer, I'd only go permananent unless they made a secure booth that was not permanently accessable to the house.
EDIT:
Here are some pictures of the snake run...
http://msnusers.com/techphotospeter/...to&PhotoID=155
http://msnusers.com/techphotospeter/...of.msnw?Page=3