DEPUSHENG Passive Speaker is engineering-grade professional sound reinforcement equipment with pure acoustic unit design, no built-in power module, needing to be matched with professional power amplifiers for use. It adopts high-fidelity low-distortion speaker unit and closed acoustic cavity design, with excellent sound transmission performance and strong sound field diffusion ability, realizing long-distance stable sound output. The product features stable tone performance, extremely low failure rate and super compatibility, supporting matching with various brands of power amplifiers and audio engineering systems. The thickened durable shell and anti-aging internal structure adapt to long-term uninterrupted engineering operation. With clear high frequency, full mid frequency and powerful low frequency, it is widely used in stage performances, conference sound reinforcement, public broadcasting and large-scale engineering audio projects.