How to Test the Ohms of a 2-Ohm Speaker – Easy Ways

To test a 2-ohm speaker is not an easy process if you don’t have the correct knowledge on how to do such a process. Knowing and correcting how to test a speaker will be a simple task as long as you have the necessary tools, for example, a wire or a multimeter. Testing any speaker is important because it will help you know if the speaker has a problem or needs some replacement.

The process of testing a speaker is done after you remove or disconnect the speaker from the amplifier before starting the testing process. It would be best if you disconnected the speaker from any connection to have the speaker you wish to test after noticing a problem or when you want to buy a new speaker. The 2-ohm speaker is a good example of testing speakers because it is easy to use and easy to get such a speaker.

The entire article discusses the procedure and steps to test a 2-ohm speaker. It provides all the required steps on how to test a speaker when one wants to test a speaker, whether it is having a problem or when you want to buy a new speaker. For the process to be complete and successful, you must assemble all the required tools. The last part of the article is the conclusion, which summarizes the entire process of testing the 2-ohm speaker.

Testing the 2-ohm speaker

Testing the 2-ohm speaker

There are several ways you will use to test a 2-ohm speaker or any type of speaker that you wish to test its performance. But in this article, we are going trot going I talk about the two common ways of testing the speaker. One of the ways of testing the speaker is using the 9-volt battery. The other most common and accurate way of testing a speaker is using the multimeter. These two methods are the best to test your speaker or any mid-range or lower-frequency subwoofer.

Two methods of testing the 2 ohm speaker;

Techniques to employ                                  functionEssential products
Using the 9 volt battery                  produces best results Check the best 9-volt battery from Amazon 
Using the Multimeter                      produces accurate results multimeter

Steps on how to test the 2-ohm speaker

1. Using the 9-volt battery

how to test the ohms of a 2 ohm speaker

In this process, you need to have the 9-volt battery, small single conductor cables, and generally the speaker itself that you want for your test. The best connector that will produce the best result is a tin connecting wire like the one in the guitar pedal and connecting the speaker with the battery.

Prepare the battery that you want to use to test your speaker and make sure the connecting wires are connected to each terminal of the battery. After ensuring that the connectors are correctly connected to the battery’s terminals, now connect the wires to the speaker terminals. Ensure that the positive wire you have connected to the positive terminal of the battery to the speaker’s positive terminal and the negative to the negative terminal of the speaker. Make sure that you process fast to prevent the DC voltage of the battery from being applied to the speaker for a longer period.

Now, after finishing the process, if the speaker is good and working it will move and produce some pop-up sounds when the battery terminals touch the speaker or the circuit is complete. Additionally, if the speaker is dead or not working, it will produce any sound and will not move.

2. Testing the 2-ohm speaker using the multimeter

Testing the 2-ohm speaker using the multimeter

Using the multimeter is not a difficult process of testing a 2-ohm speaker as long as you have the required tools to make the process successful.Below are the steps that you would follow when you want to use the multimeter to test a speaker.

i. Remove the speaker you want to test and unplug everything

This step is important because it helps you have the speaker you want to test in place and gives you a good working environment for the process. Make sure you prepare your working station by assembling all the necessary tools. Also, make sure you know how to reconnect back the speaker after testing it.

ii. Connect the wires of the speaker to the battery

After you’ve unplugged all the wire connections of the speaker, take out your 9-volt battery in place, which you will use in the process. Detach the speaker wires from where it was connected before and wrap every speaker’s wire and the multimeter to the battery.

iii. Put the digital multimeter that you want to use in the DC setting

Reset the multimeter until it reaches the symbol marked V and have a straight line on top of the V by rotating the big nob at the back. The process is setting your digital multimeter to give you the correct results.

iv. Attach the wire to the multimeter

Now, the lead that is connected to the wire and now attach the small alligator clip on the red lead at the end of the wire and the other black lead at the end of the wire. After those connections, ensure that the red lead is plugged into the multimeter with a symbol labeled V, and the black lead is plugged in front of the multimeter in the port labeled COM.

v. Now check the positive or negative number in the multimeter.

After the above process, you can now check on the value displayed on your multimeter after clipping the wires using the leads. The readings displayed are the voltage of the wires, and it is usually in positives or negatives. But if you don’t see any reading, you need to check if the alligator clips are attached correctly and tightly. If you don’t see any readings, you need now to replace the batteries of the multimeters. If the problem persists, use new leads to see if you can solve the problem.

Now, if you see the positive values on the screen of your multimeter, the leads were connected correctly, which means that the wire connected to the red lead is positive while the one connected to the black lead is negative. But when you get some negative readings, the leads are switched; therefore, you need only to switch the wires to solve such a problem.

vi. Return everything in their initial place

This is the last step whereby you must return everything in its original position. Here is the step where the insulating tape will be of much help and use. After connecting all the wires back, you turn on your sound system or subwoofer to see if everything is connected well.


If you were looking for some procedures and steps on testing a 2-ohm speaker or any speaker, you could only follow the above steps to test if a speaker is working. Since there are two methods of testing a speaker, you can choose any method that seems easy to use.

Finally, if you feel that there is a problem with the sound quality of your 2-ohm speaker, the above step’s procedures will help you diagnose and solve the problem and know if the speaker is working or not.

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