Hi guys, awesome topic! Thanks dandan for pointing me here. Been through the thread and some of the designs reminded me of this article I found ages ago; SAE Institute This acoustic hanger idea looks like its working on a pretty similar principle to the "enhanced porous absorber" design. The article seems to be pretty dated, but I thought it might be of use somehow in regards to mounting options, or a different perspective. I'm not sure if it's anything you guys haven't seen before, but I figure every little bit helps.