七九七厂新试制了一种高保真度、声场覆盖面积大的组合扬声器箱.该系统由一只大功率高顺性15英寸(约381mm)低音扬声器和一只指向性与频率无关的高频扬声器及分频衰减器组合而成.其箱体设计采用了声管倒相.该组合扬声器有较宽的频响,如图1所示.在较宽的频率范围内,指向性达到了较好的水平,如图2所示.经各方面有关人员主观试听,认为该组合音箱低音部分低沉浑厚,中音刚劲有力,高音清 A new high-fidelity loudspeaker enclosure with a large acoustical field was co-produced by the 797 plant, which consists of a high-power, high-power 15-inch (381mm) woofer and a directional high frequency- Frequency speaker and frequency attenuator combination of its box design uses a sound tube inversion. The combination of speakers have a wider frequency response, as shown in Figure 1. In a wide range of frequencies, the directivity reached A better level, as shown in Figure 2. Subjective audition by all relevant personnel, that part of the combination of low bass loudspeaker thick, strong and powerful alto, treble