room design help

Willsandbills, Rives also designs new rooms. You mentioned that your ceiling height may be 8 feet. If so, you do not want a 16' width as Twc recommended. When a dimension is a multiple of another, your standing wave problems generally increase. Since you have an opportunity to build a listening room from scratch, why not maximize the acoustics by consulting an expert.

I am now in correspondence with Ethan and hopefully he will design the room and supply the various bits that he has designed.thanks all,

Don't forget the ceiling measurements with the golden ratio! The ceiling is usually the limiting factor and equally important. For example if the ceiling is 8 feet high, then the length and width of the room must be 13 by 21 feet. If the ceiling is 9 feet, then the other measurements must be 14.5 by 23.5, etc.