随着声频-电声技术的不断发展,人们对立体声音响设备的要求也愈来愈高.然而,在整个声音重放系统中,扬声器系统依然是一个比较薄弱的环节.最近上海普陀电声厂设计制成YZ30-A型宽音域扬声器箱(声箱),以配合中、高档类立体声录音机、高保真低频放大器以及唱盘系统等组成的“音乐中心”作放声之用,能够适应读者的要求. With the continuous development of audio-electroacoustic technology, the demand for stereo audio equipment is also getting higher and higher.However, the entire sound reproduction system, the speaker system is still a relatively weak link.Shanghai Putuo Electroacoustic Factory YZ30-A wide-range loudspeaker box (sound box) is designed to be used by the “Music Center” made up of middle and high-end stereo recorders, high-fidelity low-frequency amplifiers and turntable systems to make the sound suitable for the readers.