Soundtube CM800i-WH - Two-Way 8-Inch In-Ceiling Loudspeaker (White)The CM800i is an 8", two way, blind mount in ceiling, speaker design that delivers extended low end response (71 Hz) and optimal off axis performance (2 10 kHz, independently verified). SoundTube's proprietary BroadBeam waveguide tweeter delivers consistent high performance audio across the operating bandwidth. The CM800i speaker design incorporates a lowprofile grille, proprietary motor board and six position tap switch with transformer bypass