The Orbit Ceiling Speaker (OCS1) is the ideal choice for various types of ceiling environments. The OCS1 features NEAR's MLS and MDT technologies (see below), which improve sound quality and increase operating reliability. The low-distortion speaker design, featuring NEAR's spiderless driver and one-piece metal-alloy cone structure, delivers superb articulation and the highest intelligibility for both music and speech. The speaker can be easily installed on hard surfaced ceilings, or in suspended ceilings and new construction (with the optional TBCR bracket). Wide-dispersion coaxial driver for broad, even 140 coverage Stable, high definition metal-alloy cone MDT cone design delivers detailed sound MLS eliminates conventional centering spider for more accurate voice coil centering High-efficiency drivers deliver superior performance Extremely good off-axis response Computer-matched venting system for full bass output High power handling capability for foreground sound Selectable power taps via front-mounted control 16-ohm input for non-transformer multi-speaker systems Easy wiring with snap-on connector Connector provides loop-through to next speaker Attachment point for seismic cable (safety cable) Input terminal cover with knockouts and safety eyelet provides protection for connections Low-resonance cabinet structure Off-white textured finish; easily painted to match theme decors Listed to UL Standard 60065 for US and Canada Independently tested and meets requirements of UL-2043 (report available) Attractive, contemporary, sturdy steel grille assembly with fine perforation(s) Accessory tile bridge support ring (Model TBCR sold separately) Accessory 10-foot long cable kit (Model CK10 sold separately)