A frame of wood panels screwed 2 the wall, foam inserted and strapped, covered with cloth stretched and fixed with a pin-gun.

That’s how it’s done over big water, in pale-face tipi…

Peace,

Zooot.

Gluing the foam right against the wall will considerably reduce the damping factor, and limit the absorbed frequencies 2 a single range.

The glue will also block the airway out of the foam on the whole internal side.

HAUG!

Peace,

Chief Sitting Zooot
The One Who Dances With Mics.

“If it’s broken we can still kill it.”