2-way speaker set. Set includes 1 active and 3 passive speakers. Class D amplifier with Bluetooth 5.0 receiver (improved speed and range). Magnetic steel grille. Anti-theft design. 2-way coaxial speakers. Includes speaker cable. The NCBT series features a range of flat ceiling speakers with a quick-mount system for easy installation. These high-quality 2-way speaker sets are equipped with a flush-mounted metal grille (with magnetic closure) and a Bluetooth receiver for wireless streaming of your music to the speakers. Ideal for use in your living room, on the porch, in the garage, in the showroom, in restaurants, and more.