Interesting thread on WBF - I have seen these at demos, and though never experienced them being taken out and brought in, the rooms sounded good
http://www.whatsbestforum.com/showt...-Aperture-Acoustic-Panels&p=268217#post268217
http://www.whatsbestforum.com/showt...-Aperture-Acoustic-Panels&p=268217#post268217