Hello,

First of all sorry for my English, I hope you will understand what I mean :-)

I have question about DIY panels shows here:
http://www.ethanwiner.com/BTPlans.gif

They are all attached to the existing wall. Can I attached them to something else? IE rigid 1" MDF board, so I can move them if necessary. Maybe something else?
Is this solid wall (behind absorber) important in absorption process?

Best Regards,

Lukas

Lukas,

> Can I attached them to something else? IE rigid 1" MDF board <

Yes, that will work fine. But after they're built they still need to be placed flat against a wall, as close to the wall as possible.

--Ethan