How to Hook Up Subwoofer in Car Guide on 2024

Enhancing the audio experience in your car is a desire many car owners have. Adding a subwoofer to your car’s audio system can significantly improve the bass and overall sound quality. By following this step-by-step guide, you will learn how to hook up a subwoofer in your car for an enjoyable audio experience on the road.

Before You Begin

Before starting the installation process, ensure that you have the necessary tools and equipment:

  • Subwoofer enclosure
  • Subwoofer
  • Amplifier
  • Wiring kit (includes power cable, ground cable, RCA cables, and speaker wire)
  • Line output converter (if your car stereo doesn’t have RCA outputs)
  • Socket set and screwdriver


How to Hook Up Subwoofer in Car
How to Hook Up Subwoofer in Car

Step 1: Choose the Right Location

Decide where you want to install your subwoofer enclosure. Common locations include the trunk or under a seat. Ensure that the location allows for proper ventilation and doesn’t interfere with other car components.


Step 2: Mount the Amplifier

Using your socket set and screwdriver, mount the amplifier securely in the chosen location, preferably near the subwoofer enclosure. Ensure that the amplifier is not exposed to extreme temperatures or moisture.

Step 3: Run Power Cable

This step requires caution and attention to detail. Follow these sub-steps:

3.1: Locate the car battery and determine the best route for running the power cable from the battery to the amplifier. Avoid any moving parts or hot surfaces.
3.2: Disconnect the negative terminal of the car battery.
3.3: Using the appropriate tools, drill a small hole in the firewall to create a passage for the power cable.
3.4: Route the power cable through the hole, ensuring it is hidden and protected on its way to the amplifier. Leave enough slack to connect it securely to the amplifier.
3.5: Reconnect the negative terminal of the car battery.

Step 4: Connect Ground Cable

To ensure a proper ground connection, follow these steps:

4.1: Choose a location near the amplifier to ground the ground cable. Ensure the location is free from any paint or rust.
4.2: Use sandpaper or a wire brush to remove any paint or rust from the chosen grounding location.
4.3: Attach one end of the ground cable securely to the grounding location.
4.4: Connect the other end of the ground cable to the amplifier’s designated grounding terminal.

Step 5: Install the Line Output Converter

If your car stereo doesn’t have RCA outputs, you’ll need a line output converter. Here’s how to install it:

5.1: Locate the speaker wires coming from your car stereo.
5.2: Strip the insulation off each speaker wire, exposing the bare metal.
5.3: Connect each speaker wire to the corresponding input on the line output converter.
5.4: Connect the RCA cables from the line output converter to the amplifier’s RCA inputs.


Step 6: Connect the Power Cable to the Amplifier

Connect the power cable from the car battery to the amplifier by following these steps:

6.1: Strip the insulation off the power cable’s end, exposing the bare metal.
6.2: Consult the amplifier’s manual to determine the appropriate terminal to connect the power cable to.
6.3: Attach the power cable securely to the designated terminal on the amplifier.

Step 7: Connect the Subwoofer to the Amplifier

Ensure that you’ve read the subwoofer and amplifier manuals for specific wiring instructions. Then proceed:

7.1: Connect the subwoofer’s positive terminal to the amplifier’s positive terminal.
7.2: Connect the subwoofer’s negative terminal to the amplifier’s negative terminal.

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Step 8: Connect the Remote Turn-On Wire

Finish the installation process by connecting the remote turn-on wire:

8.1: Locate your car stereo’s remote turn-on wire.
8.2: Connect the remote turn-on wire to the corresponding terminal on the amplifier.

Step 9: Test and Fine-Tune

After completing the installation, it’s crucial to test your newly installed subwoofer. Fine-tune the audio settings, including the gain, to achieve the desired bass levels.

Enjoy the enhanced audio experience and powerful bass that your newly installed subwoofer provides as you hit the road.


  • In this step-by-step guide, we have walked you through the process of hooking up a subwoofer in your car. By following these instructions, you can enjoy a superior audio experience while driving. Remember to exercise caution and attention to detail during the installation process, and consult the manuals of your specific equipment for any additional guidance needed.

Frequently Asked Questions Of How To Hook Up Subwoofer In Car


How Do I Select The Right Subwoofer For My Car?

To choose a subwoofer, consider size, power handling, and enclosure compatibility for optimal sound quality.

Can I Install A Subwoofer Without Professional Help?

Yes, if you have basic car audio knowledge and tools, you can install a subwoofer yourself.

What Is The Role Of A Subwoofer In A Car Audio System?

Subwoofers reproduce low-frequency sounds, enhancing bass quality and overall audio experience in your car.

How Can I Properly Connect The Subwoofer To My Car Stereo?

Use an amplifier and proper wiring to connect the subwoofer to the car stereo system effectively.

Last Updated on May 1, 2024 by Brian Beasley

Written by Danny Reid

Hey, I'm Danny, and I know how hard it can be to find the perfect audio gear. Need a new stereo, amp, speakers, or subs? Don't worry – my blog is here to help you cut through the noise! My mission is to give you the best reviews, so you can make the right decision for your audio needs. And if you ever get stuck thinking, "Where does this blue wire go?" don't worry – I've got tons of cool tips to help you out of any jam. So come along with me on this fun, sound-filled adventure, and let's find the perfect audio setup to make your tunes really sing!