Is this going to be bad (too much wall flex.) The reason for using metal studs in the first place is cost - pure and simple. Should I just cough up the extra cash for wood studs or am I going to be OK?.....Colin

Did you see the HT posted by darius under the HT forum? (http://www.audioroundtable.com/HomeTheater/messages/30.html) WOW!!

Thanks again, Colin

A couple more ideas to think about:

1. Dedicated circuits for the equipment (try to wire to the top of the main electrical panel).

2. Use an exterior fiberglass door (insulated with weatherstrips) and stain/paint (get door with wood graining).

3. Suspend the ceiling down from the floor structure above to isolate. (Drywall can be hung from gauge metal furring strips that run opposite the structural members.)

4. Use flexible, lined, fiberglass insulated ductwork (cheap) to minimize furnace noise.

We're completing a new house with 8 ft x 13 ft x 21 ft listening room that incorporates most of the above (builder didn't want to suspend the ceiling). The additional cost for the above is minimal (wiring $20, door $50, ceiling $150, flex duct $0 for me as that's what he wanted to use anyway as it saves most of his labor).