How To Connect A Car Subwoofer To An Amplifier

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How To Connect A Car Subwoofer To An Amplifier

Installing car audio components can be complicated, following this article makes it easy connect a subwoofer to an amplifier all by yourself.

Like any music-loving car owner, you are probably feeling a bit disappointed with your current factory audio setup. If you do not want to be stuck with a substandard stereo system, it’s time to do something about it. You need a decent subwoofer to add a bit more grunt to your music. Of course, you will also need some speakers and most importantly, a powerful amplifier to feed all these new components with enough power. This is the best part is you can do everything yourself with the right guidance. If you are looking to save some money with your very own D-I-Y project, here’s how to connect a car subwoofer to an amplifier:

What You’ll Need

  • RCA Cables
  • Ground Wire
  • Speaker Wires
  • Remote Turn-On Wire
  • Amplifier
  • Subwoofer
  • Connector Plugs For Head Unit
  • Phillips Screwdriver / Screws
  • Wire Stripper
  • Electrical Tap
  • Needle Nose Pliers
  • Among Others

A cost-friendly first step is to purchase an entire amplifier kit to help the installation look clean and organized. If you know the precise dimensions and measurements of your car, you can also buy wiring by the foot. The amount of available space will be crucial to the size of the amp and subwoofer you buy.

How to Connect A Car Subwoofer to An Amplifier

1. Lay the Power Cables

After you collect all the components you’ll need, now it’s time to put everything together. First off, you need to run the power wire from the battery, through the firewall, to the amp. This wire is usually the longest in the amp kit, typically ranging from 10 gauge to 0 and is often red in color. But do not connect the power cable to your car battery or amp just yet.

2. Find a Good Metal Ground

To sustain the best ground connection, you need to find a spot within 3 feet of the amplifier. One conventional method includes pulling up the carpeting and scraping the metal until the paint comes off and then you can ground. If your amp is in the boot space (trunk), lots of suspension bolts can be found and used. After grounding, you should then take the remote wire and splice the wire running from the dash along the panel of the door jam.

3. Plug RCA Plugs Into Subwoofer Output On Receiver

Whether you have a stereo or a media player, your next step should be running the white and Red RCA plugs that connect the sub to the source. Afterward, you need to run all these wires straight through and back to the amplifier. Experts advise that you run RCA cables in the middle of the car away from interference from wire looms and power wires since they tend to pick up certain sounds.

4. Use Speaker Wires To Connect The Subwoofers To The Amplifier

In this step, the wiring thickness or gauge is not really that important; you can go beyond 8 gauge if you wish. However, the wire should be copper which has very little resistance for facilitating fewer voltage drops. Additionally, you should remember to match the impedance of your amplifier to the subwoofer’s specifications.

5. Connect the Power Cable to Battery

Before you complete this step, you need to install the fuse into a 12v wire and mount it within the engine bay no more than half a meter away from the battery. Using the ring connectors and battery terminals, connect the power cable to the battery. Finally, connect the power line to your amplifier. After that, clamp down the power wire under the hood. In some cases, this causes a huge spark when the power cables touch the battery terminal. There’s nothing to worry about; this is just the amplifier charging the capacitors. Now, you can sit back and enjoy a hard-earned break with superb music from your new set up!

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