How to Install a Powered Subwoofer to a Factory Stereo?

If you have ever been to a concert, you know how important it is for the musicians on stage to feel your presence in their music! Do you want to hear the bass? Well, in that case, you need a powered subwoofer.

A powered subwoofer amplifies and enhances the sound of music by producing low-frequency sounds that cannot be heard with traditional stereo speakers. The same goes for our factory stereos at home they can’t play without a powerful and well-placed amplifier. 

Installing Your Subwoofers To A Factory Stereo: Simple Steps

The Installation process of Installing a powered subwoofer into your factory stereo is not difficult when you follow these steps:

  • Locate an empty space in your car where there are no obstructions or wires 
  • Unscrew any screws holding the factory stereo in place 
  • Unscrew any screws to remove your old factory stereo from its mount. This can be done by using a screwdriver. 
  • The next step is to set up the new powered subwoofer, which includes running all of the wires through the back and securing it into a position where you would like it placed. 
  • Next, attach your amplifier onto this new car audio system with these steps: 
  • Set out your amplifiers and power wire that leads to the battery. 
  • Plug your head unit into your amp wiring harness (this allows for better control over volume) 
  • Connect Audio RCA cables between Head unit / Amplifier outputs 
  • Run Power Wire directly from Battery + Terminal towards amplifier – Secure amplifier into place 
  • Make sure to secure all wires away from speakers and moving parts.
  • You can now connect your wiring harnesses together and test your system before placing back in its original location! 
  • The last step is to replace the factory stereo with a new aftermarket one: Insert the head unit faceplate adapter (if there isn’t already) 
  • Screw head unit onto mounting bracket/cut holes for vents, buttons, etc depending on how you want it positioned/size of the car 
  • Plug wire harness connectors into corresponding ports on the new Head Unit installation kit if needed 
  • Mount Head Unit where desired using provided screws or double-sided tape Once everything has been installed properly, turn the ignition key to power position but do not start the engine. 
  • Turn on your new car audio system and enjoy!

Safety Tips For Installing A Powered Subwoofer:

The installation process of a powered subwoofer to a factory stereo is not something you should take lightly. If you’ve never done it before, then there are some safety precautions that must be taken into account. 

  • The first thing to do is disconnect the battery from your car for safety purposes. Next, find an outlet near where the subwoofer will be installed and turn off the power switch on the back of the unit (if applicable). 
  • When installing this device in your vehicle, make sure there are no sharp or protruding objects nearby as these can damage the unit when it’s being installed. 
  • It also helps if you have someone help you out with all of this so they can make sure everything is positioned correctly.
  • Before you start to drill into your vehicle’s dash, it helps if the subwoofer is attached with screws that can safely hold up against vibrations. If not, then this could cause damage to both the subwoofer and/or your car over time. 
  • If there are no screw holes for installation on your factory stereo or anywhere in the surrounding areas where you want to install this device, don’t worry.

With a little creativity (and some measuring) you should be able to find somewhere suitable so long as the location doesn’t affect any other components like airbags.

Why Connect An Amplifier?

It may seem like a daunting task at first but making the decision to install an amplifier in your vehicle is one of the best investments you can make. 

Amplifiers are designed to amplify sound output from any factory or aftermarket stereo system by increasing the voltage sent to it. This allows for louder music, clearer voice communication, and better-sounding bass.

The installation process is relatively easy as well, which means that anyone with even basic skills can do it themselves without needing help from a professional technician or mechanic.

Before beginning, there are three principles about amplifiers that you should know: 

  1. amplifiers increase power
  2. not all amps are created equal
  3. timing makes everything accurate. 

How To Install An Amplifier?

  • First off, be aware that amplifiers increase power from the source that is being fed into them.
  • In other words, if your factory stereo outputs 50 watts RMS and you install a 300-watt amp to it, then the output of sound will be increased by three times as much (300/50=x^y). 
  • Secondly, amps are not all created equal; each one has its own specific purpose in mind for how it is designed to work with a certain type of car audio system.
  • The key thing here is that if you don’t know what kind of amplification setup, you need before purchasing an amplifier, you can always consult with someone who is more knowledgeable in the realm of car audio.
  • Lastly, the timing makes everything accurate; when it comes to installing amps, if the wires are not connected properly to each terminal then power will be lost and nothing will work correctly. 

When wiring an amp, there are certain colors that correspond together so make sure they match up upon installation: Red wire = positive (+) connection Black wire = negative (-) connection White wire = remote turn-on Blue wire = speaker output green/yellow wire= amplifier ground 

It’s important to follow these steps in order because otherwise, electricity could cause damage to either your vehicle or its components during installation which will be completely counterproductive to your goal of having louder music.

Final Thoughts:

Once everything has been connected and secured, it’s time to power up! Turn on the unit (if applicable) and make sure all connections are secure before turning off the vehicle’s engine again. Then turn it back on without touching any buttons to see if there are any issues like crackling sounds coming from speakers when bass hits play double-check all wires/connections too at this point in time as well. If everything looks good, then congratulations! You’ve successfully installed a powered subwoofer to your factory stereo.


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Steven Paul
By Steven Paul

Hi, I'm Steven Paul! I am dedicated to helping people learn more about subwoofers. My age is 49-year-old and passionate for helping others by doing detailed research, I really like working on SubwooferGuides.com because it gives me the opportunity to use my knowledge of research on Musical Guides. I have been researching about musical instruments for over 20 years and there is nothing that I love more than helping beginners get into the hobby of home theater audio. My goal with this site is to provide an unbiased resource where beginner's can come and find all the information they need to make educated decisions when shopping for their first subwoofer system


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