Acoustic wall panels - home made with wooden screwed and braced frames, 50mm sound deadening and fabric.
Two show here alongside a pair of Quad 2905s. I will be making three more I expect.
Approx 120cm x 64cm x 6cm.
These are intended for absorbing mid to high frequencies, over 200Hz or so - they are not bass traps !
Buyer collects from Glastonbury

£28 each.