Back-box for LC4 loudspeakers

The optional back-box (LC4-CBB), protects the rear of the loudspeaker from dust, falling objects, makes the unit vermin proof and prevents sound traveling via the ceiling cavity to adjacent areas.The back-box is assembled with the loudspeaker by means of a snap-in construction and has knock-out holes for two grommets (11.5 mm) and for two cable glands (20.5 mm) aside and on the top.