The Bogen Orbit Pendant speaker (OPS1) is the ideal choice for high ceiling and open space environments. The OPS1 features MLS and MDT technologies (see below), which improve sound quality and increase operating reliability. The low-distortion speaker design, featuring a spider-less driver and one-piece metal-alloy cone structure, delivers superb articulation and the highest intelligibility for both music and speech. The speakers consists of one 6-1/2" (nominal) low frequency transducer, and one 20mm (3/4") (nominal) high frequency transducer with a filter network for dividing frequencies between the transducers.