RCA plugs are used as the connectors on a subwoofer cable.
Subwoofer cables are used in home theater audio systems. The subwoofer cable carries a low- or line-level signal from the system's receiver to the subwoofer. The subwoofer's amplifier then boosts the signal to power the speaker in the subwoofer box. Connecting a subwoofer cable is a simple job that should only take a few minutes to complete.
Instructions
1. Examine the rear of your subwoofer and look for the SUB input. This will be a single female RCA jack built into the control panel on the back of the subwoofer. Plug one end of the subwoofer cable into this jack. It doesn't matter which end you plug in.
2. Route the cable from the subwoofer to the rear of your receiver. Look for the subwoofer output. This will be labeled as SUB OUT or LFE (low frequency effects).
3. Plug the other end of the subwoofer cable into this jack. Like the subwoofer jack, this is a single female RCA jack.
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