How To Check If a Subwoofer is Blown With Multimeter

If your car audio system is sounding a bit off, you may be able to solve the issue by checking for blown subwoofers. To do this, you’ll need a multimeter and some basic knowledge of car audio systems. This guide will show you how to check if a subwoofer is blown using a multimeter. You’re in the market for a new subwoofer and you’re not sure if it’s blown, so you should check your multimeter. First thing you know about the multimeter.

What is Multimeter

A multimeter is a device used to measure voltage, current, resistance, and other electrical properties. It can be used for troubleshooting and repairing electronic equipment. A multimeter is a device used to measure different electrical properties. It consists of two metal plates connected by a conductor, and can be used to test voltage, current, resistance, and capacitance. Multimeters can also be used to measure frequency and temperature. The device typically consists of a meter face and two test leads. One lead is connected to an object being measured, and the other lead is connected to the meter. It can be used for a variety of tasks, such as checking the electrical system in a car or testing the wiring in a home. A multimeter can be a hand-held device or a battery-powered device that can be connected to an electronic circuit. This device helps you repair your electronic devices. You can buy a multimeter from amazon or any other electronic store near you.

Test Subwoofer With Multimeter

When you’re trying to troubleshoot a blown subwoofer, the first step is to determine whether it’s the speaker or the amplifier that’s at fault. To do this, you can use a multimeter to test the subwoofer for continuity. If there is no continuity, then the speaker is blown and needs to do follow steps below:

  • To turn off the subwoofer or cut off electrical power, be sure to turn off your subwoofer. Otherwise, you might not have the proper measurements.
  • Ensure that no cables or cords are left connected to your subwoofer. Remove any input cables or power cables from your subwoofer.
  • Now, go in search of the woofer so you may access the voice coils. This is based on what woofer you have.
  • When you have access to the voice coil of your subwoofer, you must bring a multimeter and use its positive end to connect it to the terminals on the voice coil. You will notice a positive terminal on the voice coil on the subwoofer, so you should use the positive end of the multimeter at the terminal.
  • Then attach the negative probe to the negative terminal.
  • At the end, you should turn your multimeter on, and you should be able to observe the resistance of the subwoofer.

Well, this is how you test, but what about the results? Don’t stress, I have you taken care of with that. So, there are some possibilities.


  • It means your voice coils are damaged if there is no resistance.
  • When the sound level changes suddenly, it’s a strong sign of a damaged voice coil.
  • If the current reading is greater than 1 ohm, then you need to relax, as 1 ohm is acceptable. If it’s out of the 1.0-ohm range, the problem may lie elsewhere.


In conclusion, if you’re ever in doubt about whether or not your subwoofer is blown, a multimeter can be a great way to check. By following the simple steps in this article, you should be able to determine whether or not your subwoofer is in need of repair. Checking if a subwoofer is blown with a multimeter is a quick and easy process. By following the steps outlined in this article, you can determine whether your subwoofer needs to be replaced. If you have any questions, please feel free to leave a comment below. Thanks for reading!

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