K-Array KO40 Self Powered 21" High Power Subwoofer, 8 Ohms Impedance, 25Hz - 150Hz, 136dB Continuous/140dB Peak Sound Pressure Level, 4000W

The K-Array KO40 is a self-powered, Sub Bass speaker system. It is best suited for high-power extended bass response applications in arenas, theatres, concert halls, churches and outdoor events. The 21" speaker employ neodymium magnets and 6" voice coils driven by powerful D-class amplify ers. The large ports are designed to be fully symmetrical to the speakers, which means the back loading on the drivers is consistent and even with no port air turbulence. The triangle port construction also provides excellent structural integrity and strength, effectively eliminating any box resonance.

This is an effective companion sub to the KH4 and KH15 powered mid-high speaker systems. When used with the KS4 bass element the combination becomes a very effective, directional bass system with a prodigious output. An internal DSP module provides control presets. Dedicated software allows for remote control of the speaker from a PC. All the components are designed by the K-array R&D department and custom made under the K-array quality control system.