Bose DS 16F Black is the entry-level member of the DS loudspeaker family. It is a high-performance, full-range, flush-mount loudspeaker design for background music and speech reproduction in a wide range of installed applications. Frequency Response (+/-3 dB): 95 Hz - 17 kHz Nominal Dispersion: 140° conical Dimension(Diameter x Depth): 9.4" x 6.9" (239 mm x 176 mm)