The imported advanced elements are used in the linear array units, which are precisely calibrated by computer. The phase and frequency response curves are very smooth. In addition, FZL series speakers are made of imported IPC birch boards. The speakers are all made of expressive water-borne black paint. Their appearance is smooth, and they have humanized design handles. The speakers adopt new technology and have first-class sound quality. Because of high sound pressure protection, they can be maintained at high power. The original sound is not distorted, so that the tenor is clear and crisp, the intermediate frequency is transparent and the bass is full and full. It is widely used in sports venues, art squares, rock and roll music, bars, theatres, large concerts and reverberation venues for a long time, which is difficult to solve the problem of sound clarity.