Sennheiser KN6 Two Way Full Range Speaker System (Black) The KN6 is a stainless steel, self-powered, 2-way full range speaker system. It is ideal for medium throw applications in theatres, concert halls, houses of workship and AV installations. The KN6 uses two 6&rdquo, Neodymium cone speakers with 2.5&rdquo, voice coils for low-mid frequencies. The mid-high frequency section employs three 1&rdquo, voice coil Neodymium compression drivers. The transducers are optimized with on-board DSP pre-sets. The KN6 is designed to easily integrate with KN10s self- powered subwoofer. All KN6 components are designed by the K-array R&,D department and custom made under the K-array quality control system.