Definitive Technology UIW94/A Round In-Ceiling Speakers (Pair, White) Pair of in-ceiling round 2-way loudspeakers Equipped with one 9-inch stamped-basket bass/midrange driver Frequency response: 26Hz - 30kHz Equipped with one 1-inch pivoting pure aluminum dome tweeter in a coaxial configuration Cut-out size: 10.75 inches diameter