Ideal for connecting subwoofer speakers to audio ... corrosion-resistant gold-plated RCA connectors provide a consistently tighter fit than commonly rolled cables with wider tolerances.

Connecting a subwoofer to your receiver is an essential step in getting deep bass for your home theater or audio setup. But ...

A plug and socket for coaxial cable. RCA connectors are used for analog audio signals (see analog audio). They are also used for digital audio (see S/PDIF) and analog video (see composite video).