How to Check the Ohms of a Speaker?

If your speaker isn’t working correctly, one possible issue is that the ohms are off. Checking the ohms of a speaker is a relatively simple process that can be done with a multimeter. First, you’ll want to disconnect the speaker from any power source or audio equipment.

Once it’s disconnected, touch one of the meter’s probes to each of the terminals on the back of the speaker. If the reading on the multimeter is within plus or minus 20 percent of the nominal impedance rating for your speaker, then the ohms are fine. If not, you’ll need to adjust them accordingly.

  • Turn the speaker upside down so that you can see the back of it
  • Locate the two terminals on the back of the speaker
  • These will be two metal posts, or in some cases, two exposed wires
  • Touch one probe of your multimeter to each terminal on the back of the speaker
  • Set your multimeter to measure ohms (Ω)
  • Read the value displayed on the multimeter
  • This is the resistance of your speaker

How Do I Test a Speaker With a Multimeter?

If you want to test a speaker with a multimeter, you’ll need to use the ohmmeter setting. First, disconnect the speaker from any power source. Then, touch one probe of the multimeter to the positive terminal on the speaker and touch the other probe to the negative terminal.

If the reading is close to zero, that means the speaker is working properly.

How Many Ohms Should a Speaker Have?

This is a difficult question to answer without knowing more about the specific speaker in question. In general, though, most speakers have an impedance of between 4 and 8 ohms. The lower the impedance, the easier it is for the amplifier to drive the speaker, and the higher the sound quality will be.

However, very low-impedance speakers (2 ohms or less) can be difficult to drive, so you may need a more powerful amplifier if you go this route.

How to Check Speaker Ohms With Multimeter

If you’re a musician or audio engineer, chances are you’ve had to deal with speakers and speaker wiring at some point. And if you’re working with speakers, you’ll need to know how to check the ohms. The ohm is the unit of measurement for resistance in an electrical circuit.

In practical terms, this means that the higher the number of ohms, the greater the resistance to current flow. When it comes to speakers, impedance is measured in ohms and is represented by the symbol “Ω.” The impedance of a speaker varies depending on its size, material composition, and design.

For example, a small 8-ohm speaker will have less impedance than a large 4-ohm speaker. So why does impedance matter? It’s important to know because different amplifiers are designed to work with different impedances.

For example, most home stereo amplifiers are designed for use with 8-ohm speakers. If you were to try and use a 4-ohm speaker with one of these amplifiers, you would probably damage the amplifier (and possibly the speaker as well). To check the impedance of your speakers, you’ll need a multimeter.

A multimeter is an electronic testing device that can measure voltage, current, and resistance. Most multimeters also have a built-in continuity test function that can be used to check for shorts in the wiring.


If you’re wondering how to check the ohms of a speaker, there are a few different ways you can do it. One way is to use an ohmmeter, which is a device that measures electrical resistance. Another way is to use a multimeter, which can measure both voltage and current.

Finally, you can also use a wattmeter to measure the power output of the speaker.

Ahnaf Nihin is a senior content writer at Gametechia. He's having 10 years of experience in Technology and troubleshooting topics. Coming from a background in engineering, you will often see his writing stuff related to How To's, Android, and iOS.