Acoustic panels on ceiling

I've been in a few concert halls where the panels are "floating" in mid-air. They are suspended by wires. You might try putting on an angle. If I were going to do this (panels on ceiling), I'd put them in the center of the room. YMMV.

In this situation I would contact GIK directly and e-mail them pictures of your room as it is currently  set up. They are very helpful in helping their customers utilize their products.
David Pritchard

I did. They said “put them where the first Reflection points on ceiling are”. I tried the mirror trick (hard on ceiling), and could not see anything 

thyname, mind me asking what is the mirror trick?

@jetter see this:

https://www.gikacoustics.com/early-reflection-points/

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