The ERD8U is a UL Listed, 275 CID, round, steel loudspeaker back box with a circular, molded polystyrene damping pad fitted to the inside top of the enclosure, with four (4) welded tie-off straps.
The ERD8U is a UL Listed, 275 CID, round, steel loudspeaker back box with a circular, molded polystyrene damping pad fitted to the inside top of the enclosure, with four (4) welded tie-off straps.