Do I need to use both inputs on subwoofer?
Most subwoofers have two inputs: a left/right input and a subwoofer input. The left/right input is typically used to connect the subwoofer to the receiver or amplifier’s LFE (low-frequency effects) output. The subwoofer input is typically used to connect the subwoofer to the receiver or amplifier’s main stereo outputs. So, do you need to use …