The lighting crew recently replaced the light dimmers in our theater, and they mounted the new dimmers up high in side loft areas within direct earshot of the audience and stage area. The result is a low buzz from the noisy fans that kick in whenever we have more than a moderately lit scene.
Our tech guys have tried to contain the sound by building wood boxes around them with foam interiors, but that provide only marginal relief. During quiet scenes the dimmer noise is very noticable.
Has anyone dealt with this issue before? If so, any suggestions on a good way to eliminate the noise, other than the obvious one of relocating the dimmers to somewhere they won't be heard? I'm thinking plexiglas enclosures that are vented/fanned in back might do the trick.
Thanks in advance. John