Do you have to hook a power subwoofer into a wall outlet?
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What do you expect buddy? It needs power to operate. A powered subwoofer has a built-in class D amplifier. It needs to plug into a 120-volt power outlet.
Power has to come from somewhere. A powered subwoofer needs an external power source. A subwoofer that is driven solely by the amp is just like the other speakers in the system.
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