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在模拟杜比环绕声系统中,通常只用一只超低音音箱重放音源中的超低音低频信号。对于杜比数字系统来说,其低音安排就灵活多了,信息也分布在各个声道上。五只音箱可以是全频域的,本身带有低音单元;也可是小音箱再加超低音音箱。另外还有一只超低音音箱用于低音效果还音。音箱的排列形式很容易设置,似乎用可以再现低音和中、高音
In analog Dolby Surround systems, it is common to use only one subwoofer to play back subwoofer audio signals. For Dolby Digital systems, the bass is more flexible and the information is distributed across channels. Five speakers can be all-frequency, itself with a bass unit, but also a small speaker plus subwoofer. There is also a subwoofer for bass response. The layout of the speakers is easy to set up, it seems to be able to reproduce the bass and medium, treble