The SoundTube CM400i-WH 4in COAXIAL IN-CEILING SPEAKER is a high-quality audio solution for your home. With a driver size of 4 inches and an impedance of 4 ohms, this white speaker delivers clear sound in the frequency range of 90 Hz to 22 kHz. Perfect for wired connectivity, this ceiling speaker from Sound Tube is designed for optimal performance and a sleek white finish that blends seamlessly into any room. Box Opened to Photograph. New.