- Self-powered integrated DSP and remote control - Variable vertical coverage - Wide horizontal coverage - Integrated flying and stacking hardware The K-array KH4 is a high performance, self-powered, 2-way line array speaker system. At just over 51 Kg (113.32 lb) and 16 cm deep (6 inches), its ultra-compact aluminum enclosure contains an incredible reserve of power that ensures very high sound pressure, with wide consistent (120°) horizontal coverage.