Willie
very interesting insight on the minnimal pull down effectiveness of the vinyl blind. Move than likely you had standing waves building at the ceiling points or refracted off the back wall upward.
I have always had the idea of retiring in a mountain area with a sweeping view behind the sound system. perhaps support wall gaps right behind the speakers
your friends concert - he might consider dry walling that area
and if he needs external soundproofing double it up with an air gap
very interesting insight on the minnimal pull down effectiveness of the vinyl blind. Move than likely you had standing waves building at the ceiling points or refracted off the back wall upward.
I have always had the idea of retiring in a mountain area with a sweeping view behind the sound system. perhaps support wall gaps right behind the speakers
your friends concert - he might consider dry walling that area
and if he needs external soundproofing double it up with an air gap