Step-by-Step Guide: Connecting Subwoofer with Speaker Wire for Home Theaters

If you’re an audiophile, you probably know how important it is to have a good subwoofer in your home theater setup. It can make all the difference when it comes to sound quality and overall viewing experience. But connecting a subwoofer with speaker wire may seem intimidating for those who are new to setting up a home theater system. Fear not, as we have prepared a comprehensive step-by-step guide to help you connect your subwoofer with speaker wire.

Step-by-Step Guide: Connecting Subwoofer with Speaker Wire for Home TheatersStep-by-Step Guide: Connecting Subwoofer with Speaker Wire for Home Theaters

Materials you will need:

Before we start, you will need the following materials:

  • Subwoofer
  • Speaker Wire
  • Wire Strippers
  • Wire Connectors or Banana Plugs

Step 1: Turn off the power

Disconnect power sources from both the subwoofer and the amplifier before connecting the wires. This will prevent accidents and injuries, and avoid electrical interference.

Step 2: Identify the output port

Identify the output port for the subwoofer on the back of your home theater amplifier or receiver. This will usually be marked as “subwoofer output” or “LFE output”.


If your amplifier or receiver lacks a dedicated subwoofer output, you can connect the speaker wires to the left and right channel speaker terminals on the amplifier, and then connect the wires to the subwoofer input terminals.

Step 3: Cut the wire

Cut the speaker wire to the required length, leaving some length allowance for flexibility.

Step 4: Strip the wire

Strip the insulation off the ends of the speaker wire using the wire strippers. Make sure you only strip about 3/8 inch of the insulation to avoid exposing too much wire.

Step 5: Connect the wires

Connect the speaker wire to your subwoofer by inserting the stripped wire into the subwoofer’s input terminals. You can use wire connectors or banana plugs for a more secure and easier-to-manage connection.


If your subwoofer has two input terminals, you can connect them using a “Y” splitter cable. This will allow for both left and right channel signals to be reproduced by the subwoofer.

Step 6: Connect the other end of the wire

Connect the other end of the speaker wire to the corresponding terminals on the amplifier or receiver’s output port. Ensure that you make the proper polarity connections, usually positive to positive and negative to negative.


Some subwoofers have a volume control onboard. If your subwoofer has one, set it to the halfway point. You can adjust the volume later when you begin setting the home theater up.

Step 7: Turn on the power

Reconnect the power sources back to the subwoofer and amplifier. Turn on your home theater system and test your sound quality to ensure the subwoofer is working correctly.

Tips for a Better Connection

  • Always use high-quality speaker wire to ensure high-quality sound.
  • Keep the wires neat and tidy for a better aesthetic.
  • Ensure that the wires are not pinched, twisted, or stretched excessively during installation.
  • Always check the polarity of the wires before making a final connection.


Connecting a subwoofer with speaker wire is relatively easy and quick, even for those new to home theater systems. By following this step-by-step guide, you can enjoy a more immersive and high-quality sound experience in your home theater. Don’t be afraid to experiment with different speakers, wires and setups to find the best one that suits your needs.


FAQ 1: Can I connect subwoofer with speaker wire without an amplifier?

No, you cannot connect a subwoofer with speaker wire directly without an amplifier. Subwoofers require an external amplifier or receiver to provide the necessary power for the subwoofer to function properly. If your home theater does not have a separate subwoofer amplifier or receiver, you will need to purchase one to connect your subwoofer to your speakers.

FAQ 2: How do I connect a subwoofer to my home theater system?

To connect a subwoofer to your home theater system, you will need to follow these steps:

Turn off all components of your home theater system.
Locate the subwoofer output on your receiver or amplifier and connect one end of the subwoofer cable to this output.
Connect the other end of the subwoofer cable to the input on your subwoofer.
Connect your speakers to the amplifier or receiver using the speaker wire.
Turn on your home theater system and adjust the volume and settings on your subwoofer and amplifier or receiver as needed.

FAQ 3: How do I know which speaker wire to use when connecting a subwoofer to my home theater system?

When connecting a subwoofer to your home theater system, it is important to use the right type of speaker wire. The wire should be thick enough to handle the power output of your amplifier or receiver. Generally, a gauge of 12-16 AWG is recommended for subwoofer speaker wire. Be sure to also choose a wire that is long enough to reach between your subwoofer and amplifier or receiver, but not too long to cause signal loss. It is also recommended to choose a wire with high-quality insulation to avoid interference and distortion in the audio signal.