[xaMdaM]

Roblee2803,

A coupla' thoughts.

I initially designed my iso booth as a diamond, (almost EXACTLY to your dimensions) and then realized two things... when your room shape is a diamond, you're really creating a concave shape in a small enclosure... not good.

Also, if you can create an angled ceiling (which I HIGHLY recommend) then your construction is a buttload easier to use square corners.

Instead of a completely symmetrical room, you really do want all the lengths to be different... even if it's a 6" difference between wall lengths... and bigger is better. Offset the door from the center of the wall.

When you get this iso booth built, you're gonna need quite a bit of trapping in there. So, be sure you take into account the correct sizing/scale of your drawing. That way, you'll not be in for any rude awakenings when you start to run out of room.

You better put some ventilation in there as well. Even if it's passive convection. It's pretty easy to make a small room like this air tight... which you really should... and you can run out of usable air in just a few minutes of singing. Carbon monoxide poisoning happens a LOT faster than you think... PUT VENTILATION IN THERE!

Put a 6x10 opening at the bottom, and a 6x10 opening at the top... just put em' on different walls. Create two 90 degree turns on each one. They don't need to be fancy, just functional, and you can run your cables through the bottom opening.

Since you probably won't have this inspected, I would not put any electrical in the walls, and just run a light in there via long power cord.