The role of stage monitor speakers is very important. Especially in large concert halls, direct and indirect sound from a large number of speakers and enthusiastic audience shouts will affect the monitoring environment of singers and performers. Therefore, stage monitoring must ensure sufficient sound pressure, clarity and straightness. The KM series are monitor speakers that play real value in this environment. By using a high-performance coaxial unit, compared with the compact housing size, it has a strong sound pressure and clear sound, and an ideal listening angle. In addition, the through hole can be used as a side-filled speaker or a main speaker for small and medium-sized spaces. There are two types of KM series, active type and passive type. The passive type can reproduce the best sound through a well-designed passive network. The active type uses the Powersoft DSP module and power module, and has built-in dedicated DSP data to reproduce better sound.