Almost all home theater receivers and processors and some stereo receivers have this throw in of subwoofer output.

It’s usually just one cable with single RCA connectors on both ends.

This process is the same asconnecting a basic stereo speaker using speaker wire.

An illustration of the options for connecting a subwoofer.

Lifewire / Miguel Co

Be sure to mind the channels.

Alternatively, use an RCA Y-Adapter to send two parallel low-frequency audio signals to two separate subwoofers.

Yes, if your subwoofer has the appropriate jack.Coaxial cablesare recommended for long-distance connections.