Biamp Commercial Loudspeakers CMBB On-Wall Back Box

CM-series loudspeakers are designed to drop into a suspended ceiling and use the plenum above as their back volume. The CMBB is the answer for every room that has no plenum: a moulded round back box the speaker mounts into, so the same driver can go on a plasterboard wall, a concrete soffit or an exposed structural ceiling and still be enclosed.

It fits the CM6T, CM6E, CM20T, CM608, CM20DT and CM608D. The rear face carries keyhole slots and screw bosses for the fixing pattern, plus cable entry positions, and the speaker's own tile rails clamp into the box exactly as they would into a ceiling cut-out. Finish is white to match the CM grille. Order it under Biamp part number 910-01566, sold individually - one box per loudspeaker.