These assemblies feature the model 8C10PAX 8" dual-cone loudspeaker with a 10 oz. ceramic magnet, a 25, 70 or 25/70 volt transformer, and a choice of several baffles. The constant voltage line transformers have taps ranging from 1/4 to 5 watts and are supplied with 8-ohm secondary connectors. The ceiling baffles feature one piece construction to virtually eliminate vibration and fit most recessed enclosures, including Quam ERD-8 series backboxes as well as plaster rings and Quam SSB-2 and SSB-3 tile support bridges. All units come fully assembled with mounting hardware.