Atlas Sound A-R is an Adapter Ring for recessed Mounting of Voice/Tone Loudspeakers. It is a welded steel collar with a 4" SQ x 2" D (103mm x 51mm) that provide necessary extension for any 4" SQ x 21/8" D (102mm x 54mm) E.O. box. When assembled, the unit is 31/16" deep and will fit in a standard 4" stud wall.
All models contain a high efficiency compression driver with maximum acoustic conversion efficiency. (A quality which reduces number of units needed to attain specified sound pressure levels and provides substantial savings in amplification-power requirements and labor costs.)
Optional mounting accessories are offered including: indoor and outdoor enclosures, a bi-directional housing, adapter plates and rings.