My son had a party and burned my 30 years old speakers with 811b horns/ 807-8A drivers, so this saved the situation. For me they do not fit directly, it was too tight, I had to make a gasket of 0.7 mm and add between driver and membranes, but nevertheless it can really recommend these membranes
Reviewed by: Harry Nilsson from Sweden.
on 12/15/2010