How to install car tweeters

Written by aaron wein
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How to install car tweeters
Install tweeters to your car with a crossover cable. (speakers image by Sergey Galushko from

Tweeters, a type of speaker, work in conjunction with woofers to yield a balanced sound. The tweeter, which is much smaller than a woofer, handles the high-pitch sounds while the woofer emits low-frequency sounds, such as bass. Working together, the two are called component speakers. However, in order to function properly, users must install a crossover cable to prevent low frequencies from damaging the tweeter. The crossover cable essentially divides the power coming from the power source, such as an amplifier or head unit, to send the lows to the woofer and the highs to the tweeter.

Skill level:

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Things you need

  • Woofer
  • Crossover cable
  • Wire cutters
  • Soldering iron and solder
  • Phillips-head screw driver
  • 2 faston connectors
  • Crimpers

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  1. 1

    Remove the negative terminal from the vehicle's battery. This is a vital safety step to prevent short circuits. Disconnecting your car battery can also disable a head unit if it is equipped with certain security features so make sure you have the proper information to reactivate it.

  2. 2

    Gain access to your speaker and tweeter mounts. This step varies from vehicle to vehicle. For instance, if you are installing your component speakers to your car door, you will likely have to remove the door panel.

  3. 3

    Remove any stock equipment, such as original tweeters or woofers. Vehicle speakers and tweeters are always mounted via screws, so use a Phillips-head driver to remove the screws holding the tweeters or woofers in place. Disconnect the speaker wire from the tweeter's or woofer's terminals.

  4. 4

    Connect the crossover cable to the output speaker wire, which is the wire that powered the original woofer. This wire strings directly to the power source, such as the amplifier or head unit. Solder the crossover cable's input wire to the power source's output wire with the soldering iron. Ensure that you match polarities, meaning positives should connect to positives and vice versa for negatives.

  5. 5

    Connect the high-frequency lead from the crossover cable to the tweeter and connect the remaining low-frequency lead to the woofer. Do this by crimping faston connectors to the end of each of the two remaining crossover leads. Then, slide the faston connector over the terminal of the respective speaker.

  6. 6

    Mount the woofer and tweeter. Ideally, the woofer and tweeter would screw into the stock mounts, but that is not always the case. In instances where the tweeter and woofer do not fit in the original mounts, you must purchase aftermarket mounting kits and follow the specific instructions given with those kits. Mounting the speakers consists of screwing them back into place the same way you removed the original equipment.

  7. 7

    Finish the installation by mounting the crossover cable's body in a secure area where it will not be affected by weather conditions. The location can vary, but it's safe to leave it in a door frame as long as the frame isn't damaged.

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