My last post is the speaker to wall distance for a downward cancellation spike at 200HZ (not reinforcement...oops).
If you are seeing an upward spike or reinforcement at 200 HZ then the distance from the rear wall to the front baffle of your main speakers would need to be about 60 CM to cause this.
Sorry for the error on last post.
If you are seeing an upward spike or reinforcement at 200 HZ then the distance from the rear wall to the front baffle of your main speakers would need to be about 60 CM to cause this.
Sorry for the error on last post.