Power Box 61 is a pair of two-way loudspeakers consisting of one speaker with a built-in stereo amplifier and a second passive speaker, ready to connect to the active unit via a Phoenix connector. System is equipped with high-efficiency 2 x 30W Class D power amplifier, 6” woofers, and a 1” tweeters. A U-bracket for mounting on the wall or ceiling is included in the set.