How to Connect a Subwoofer With a Speaker Wire to a PreOut Connection on a Receiver

Category: Tech

How to Connect a Subwoofer With a Speaker Wire to a Pre-Out Connection on a Receiver

A receiver pre-out connection is an output jack that does not deliver an amplified signal. The pre-out is useful for connecting a powered subwoofer because the sub has a built-in amplifier to supply its own power. By connecting the two components this way, the receiver is free to deliver power for other speakers and components connected to the system. The sub shoulders its own weight to deliver heavy bass. A subwoofer speaker wire with RCA-type connectors on both ends is needed to connect the sub with the receiver.

Things You'll Need

  • Subwoofer speaker wire


  • Turn off the receiver and the sub, then disconnect the electrical cords from the wall outlet. Connecting a sub while the receiver is turned on could cause a sudden power surge that can damage the equipment.

  • Insert the plug on the end of the sub wire into the Pre-Out jack on the back of the receiver, pushing the plug straight in until it seats with a click.

  • Connect the other end of the wire to the Input jack on the back of the subwoofer in the same manner.

  • Reconnect both components to the power supply and turn them on. The sub may have a power switch or may switch on automatically, depending on the model.

  • Adjust the volume control knob on the back of the sub to the desired level.

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