Diffusers for magnepan speakers


Looking for thoughts on building a skyline diffuser panel the same size as a maggie 1.6 to place behind speakers. Asking for advice because my online reseach mentioned a 2x2 panel for general specs. i do not want to waste the time and money if it would not sound good. I am thinking about three 2x2 panels placed on stands behind the speakers about 3.5 feet. Any thoughts would be appreciated.
maplegrovemusic
i am drawing the conclusion that magnepan has been responsible for more audiophiles tweaking everything than any other manufacturer. i of course have ficus trees, tape on floor to mark location, tube traps, acoustic panels, homemade stands and braces and razor treatment, cones, new crossovers, specially chosen wires, electronics etc to make my 600 dollar mmgs sound good. and i loved every minute of it. where else could i have had this much fun legally??? btw.. they sound pretty good
For some reason, Magnepan is a lightning rod for DIY.

I've got he bug, too......and taking the woodshop classes to prove it.
i didn,t like acoustic treatments hung behind my mmgs speakers but they are easy to move and experiment with. your room is the same shape as mine but i have pictures, books, cabinets, wall art/objects everywhere. a neat freak would have a nervous breakdown here, ha. i use 2 cathedral panels behind my listening seat and 2 more on the sidewalls at the pt of first relection. i do have tube traps and roomtunes in the corners of the room. i still don,t have things perfect but i doubt i ever will. good luck
Hotmailjbc,

When you say you have roomtunes in the corners of the room, are you referring to the Michael Green corner tunes -- that is, the triangle "pillows" that go in corners?

If so, what is your experience with them as far as how much of an improvement they make?

I have some absorption panels and diffusion, and they make a huge difference in my room. For example, if I were to take any of the treatments out of the room, it would be noticeable (for the worse). Do the corner tunes make much of a difference? Is it mainly in upper frequencies?