AK series speakers have the functions of K and HI. The characteristics of this series of speakers are high power, high efficiency, large sound pressure, full tone, strong and strong sense of power. First-class sound quality, sweet vocals, fast response speed, and the sound is like the galloping horses, unrestrained, and like the birds and antelopes. The true high sound pressure protection can keep the original sound undistorted under the condition of high power, and it can meet the multifunctional uses of K and HI freely in all directions. Through precise computer calibration, its phase and frequency response curves are very smooth, and the horn covers 80 ° × 50 °, which can be adjusted vertically or horizontally according to the situation.