Power Box 5 is a pair of loudspeakers consisting of one speaker with a built-in 2x20W stereo amplifier and one passive speaker, which connects to the active unit via a Phoenix connector. The speakers are with 5.25" woofer and a 1.5" tweeter. The system has RCA line input in parallel with 3.5 mm TRS Tone control, stereo/mono switch, and power indicator. U-bracket for wall mounting is included in the set. It’s perfect choice for small installations in classrooms, communication systems, and paging setups.