[davejcb]

Thank you!

[davejcb]

Just read this article, mentions this on page 10:

There are other acoustical problems associated with rooms besides standing waves. For instance, the corner where two walls and a floor or ceiling meet (geometrically, this is called a “right tricorner”), will reflect sound of any frequency directly back in the direction from whence it arrived. (This is the principle used in radar reflectors and also the red light  reflectors found on many bicycles and cars.) Two right tricorners in a room, especially if they are diagonally opposite each other, will give rise to standing waves just like parallel surfaces will. Also, in large rooms, a right tricorner will give an echo, regardless of the location of the sound source. If the angles meeting at the corner are not right angles, the tricorner does not reflect back in the same direction, and therefore architects are always admonished to avoid right tricorners in music rooms, regardless of their size.

This sounds to me as exactly what the Eighth Nerve Corners address. What I'm wondering is if buiding the corner bass trap made of fiberglass from floor to ceiling has the same effect? In essence you're getting rid of the 90 degree tricorner, so to me the Eighth Nerve Corner would be useless...

Make sense?

[Red Dragon Audio]

I've read that article before and it has some great points to it.

I think you are right about your idea; build corner traps with rigid fiberglass from the floor all the way up to the ceiling, thereby eliminating the " right tricorner".  

I've seen on Ethan's site where they have mounted traps across the "right tricorner" which addresses that very issue.

By the way, how is the room coming thus far?  

[davejcb]

Gettin' there, painting the ceiling, been in Alberta for a while...