The DT12 from Atlas Sound combines ease of installation with superb intelligibility for speech and music reproduction. The 1' x 2' footprint allows quick installation into 2' x 2' or 2' x 4' acoustic tile ceilings. The E.O. box (with cover) is smartly positioned on the side of the conical enclosure to facilitate rigid or flexible conduit. An external tap selector switch (located on the side of the enclosure) allows for easy system tuning by providing quick installer access to the 70.7V tap settings ranging from 0.25 to 4 watts.