The K-array KS5 is a self-powered subwoofer system. It is best suited for high-powered, extended bass response applications in arenas, theatres, stadiums, concert halls, houses of worship and outdoor events. The 21" loudspeakers feature Neodymium magnets with 6" voice coils driven by powerful Class D amplifiers. The rear panel provides inputs for a balanced line signal, a balanced microphone signal with phantom power, and digital signals in AES/EBU protocol, also on an XLR for ease of cabling.