这是非常简单的音响系统，转盘，放大器-和扬声器-一成不变的。
It is very simply a hi-fi system - with turntable, amplifier, and speakers - cast in concrete.
这些线路电平输入相加之前发送到内部放大器允许在低音音响系统操作使用一个低音炮。
These line level inputs are summed before being sent to the internal amplifier allowing the subwoofer to operate in stereo systems using a single subwoofer.
这就意味着电声音响系统将不用提供更多的增益或者放大器而得到足够的音量。
This means your sound system electronics will not have to provide as much gain or amplification in order to obtain a sufficient volume.
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