I built a set many years ago following this guide: http://https//www.audioasylum.com/audio/tweaks/messages/17/170446.html
They definitely can help improve your soundstage but aren't nearly as effective as traditional room treatments. Not even close. Once I treated my listening area with GIK's products, I threw the DIY room lenses in the trash.
They definitely can help improve your soundstage but aren't nearly as effective as traditional room treatments. Not even close. Once I treated my listening area with GIK's products, I threw the DIY room lenses in the trash.