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How to Tap into Rear Speakers for Subs: Enhance Your Bass!


To tap into rear speakers for subs, splice into their wires and connect them to your amplifier. Use a line output converter if necessary to match signal levels.

Tapping into your car’s rear speakers provides a signal source for adding a subwoofer, enhancing your vehicle’s audio system. This process involves interfacing with your car’s existing wiring and may require additional components to ensure compatibility with the amplifier. For audiophiles looking to boost their sound experience, integrating a subwoofer brings out the rich, deep bass often missing from factory setups.

This upgrade is not just about volume; it’s about adding depth and clarity to your music. Ensure you have the right tools and understand the specifics of your car’s audio system to avoid any mishaps. Subwoofers can transform your listening experience, offering a fuller, more immersive sound that stock speakers rarely achieve.

Understanding Rear Speaker Connections

Understanding Rear Speaker Connections

Identifying the correct rear speakers to connect a subwoofer involves distinguishing between coaxial and component speakers. Coaxial speakers, also known as full-range speakers, integrate multiple speaker elements into a single unit, making them simpler to connect with a sub. On the other hand, component speakers feature separate drivers, delivering superior sound quality – an optimal choice to enhance audio fidelity with a subwoofer.

For an effective subwoofer setup, assessing your rear speakers’ power handling and impedance level is crucial. Ensuring compatibility between subwoofer specifications and the rear speakers’ characteristics will result in a harmonious audio system. Focus on speakers that support the subwoofer’s low-frequency output for the best auditory experience.

Step-by-step Guide To Tapping Into Rear Speakers

Finding your rear speakers involves a bit of detective work. You’ll need to access the trunk or the rear portion of your vehicle’s interior. In most cases, speakers are located behind seat panels or side panels. You might need a flashlight to spot the speaker wires leading to the factory harness.

Use your vehicle’s wiring diagram to identify positive and negative speaker wires to understand wiring and connection options. This is crucial for correctly hooking up your subs to maintain audio quality and prevent damage. To make these connections, you may decide between using speaker wiretaps or a line output converter (LOC), which provides a better signal for the subwoofer’s amplifier.

Preparation is key. Ensure you have the following tools and materials: a screwdriver set, wire cutters/strippers, electrical tape or wire connectors, and possibly a LOC. With these items, you’ll be ready to safely tap into your vehicle’s rear speaker system and enhance your audio experience with the added bass from a subwoofer.

Enhancing Bass Performance With Rear Speaker Subs

Tapping into rear speakers for subwoofers can significantly enhance the bass performance in your audio setup. It is crucial to adjust the settings of both the subwoofer and the car’s stereo system to achieve optimal bass. Begin by setting the high-pass filter on the rear speakers. This prevents low frequencies from muddling the sound, allowing them to focus on delivering clearer mids and highs.

Integrating the subwoofer involves setting its low-pass filter, effectively capturing the deep tones and bass that rear speakers cannot handle. The volume levels between the subwoofer and speakers should be balanced to ensure a seamless audio blend. Finely tuning the phase settings can help synchronize the sound, eliminating any delay that might obscure the bass punch.

Testing this integration is key; listen to various music genres to ensure the bass is consistently rich and distortion-free across all types of tracks. Make incremental adjustments and take note of the changes in sound quality after each tweak. This systematic approach guarantees a customized bass experience that caters to your preference.

Frequently Asked Questions For How To Tap Into Rear Speakers For Subs

How Do You Connect the Speaker Wire To the Subwoofer?

Identify the subwoofer’s speaker wire terminals, usually marked as ‘Input.’ Strip the ends of your speaker wires, exposing the bare wire. Twist the strands tightly to avoid fraying. Connect the positive wire to the red terminal and the negative wire to the black terminal.

Secure connections by tightening the terminal screws.

How Do You Splice Factory Speaker Wire?

To splice factory speaker wire, strip both wire ends, twist the exposed wires together, solder for a secure connection, and insulate with heat-shrink tubing or electrical tape. Always ensure the power is off before starting.

Can You Run Subs With Stock Speakers?

You can run subwoofers with stock speakers by connecting them to an aftermarket amplifier, ensuring balanced sound quality.

How Do You Hook Up An Amp To Speaker-level Inputs?

First, disconnect the car battery to hook up an amp to speaker-level inputs. Locate the amplifier’s speaker-level inputs and connect the car stereo’s speaker output wires to these inputs. Ensure proper polarity, then reattach the car battery and test the system.


With the right guidance, wrapping up and tapping into your rear speakers for subs isn’t daunting. The steps outlined can revolutionize your car’s audio experience. These tips allow you to enjoy deeper bass and a more immersive soundscape. Happy tuning, and relish the enhanced beats on your next drive!

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