Your subwoofer is not working, and you are confused if it’s blown or some other issues. After performing the tests I am going to tell you, you will be able to tell what is exactly wrong with your subwoofer.
Let’s go.
Firstly you need to figure out is there any problem with your amplifier or your subwoofer itself?
Well, You can quickly figure it out by testing the amplifier. While performing this test, keep in mind that all power source and ground wires are correctly connected, and resistance should be equal on both sides of the amplifier.
If you get a reading on the meter, then most likely, your amplifier is fine.
If you get no reading or superficial reading, then most likely, your amplifier has blown
Here are some simple steps to test subwoofer without an amplifier:
Now you will test your subwoofer by shorting all the terminals using a small piece of cables or wires.
Connect one side of the wire to each terminal which is on the subwoofer.
You don’t need your amplifier in this case.
However, if there is no sound or you don’t hear anything, that means your subwoofer is not working at all.
This is the most critical step since you want to know whether your subwoofer speaker is blown or not. If you have a multimeter, this test will be very easy for you.
If your amplifier uses speakON connectors instead of standard speaker wire terminals, it is very helpful to know how this connection works.
Most of the speaker cables that you will use in-car audio are 4-ohm cables, and using this cable; you can test subwoofer easily.
You need to test subwoofer in the following way:
Remember that this test should be performed with a 4-ohm cable because other cables might not work properly.
So, this is how you test a subwoofer with a speakON cable; I hope it will help you.
If you have followed all the above steps and your subwoofer is still not working, it is most likely dead.
In that condition, there is no option but to change your subwoofer. You can replace it with a new one or try to fix it by changing a few parts.
In case of replacement, you need to buy a new subwoofer with the same RMS(Root Mean Square) wattage and the same ohm rating.
Having a better subwoofer in your car is like having an extra pair of speakers because the woofer do the main work, and we all know how important it is to have a clear sound quality.
So if you have blown your subwoofer, then there are two options:
Usually, people, especially car audio guys, spend so much time trying to fix it, which wastes both time and money.
Hopefully, this article gives you enough information to test a subwoofer and know if it is blown or not.
A: There are few possible reasons for this. You can check it by performing the above tests or asking some local car audio inputs guy to help you.
A: Technically, there is nothing complicated about testing a subwoofer with 4-ohm cables. You should check the manual of your amplifier to see how it works. Still, you need to connect one side of the positive multimeter probe to the negative terminal cable and the other side to each speakON connector on the amplifier.
A: The ohm rating depends on the power of the subwoofer and the amplifier. Generally, most car audio subwoofers range from 1ohm to 2ohms on average, but if you have a powerful amplifier, it is not needed to be that low.
A: Many factors affect the RMS wattage rating. Such as the size of the subwoofer, the number of speakers in your car and the type of amplifier. Generally, most car audio subwoofers range from 200watts to 1200 watts on average, but if you have a powerful amplifier, then there is no need to be that much. For example, if you have a 600-watt amplifier, buying a 300 watts subwoofer should be enough for your car.
A: Yes, This is another way of checking the faulty speaker. You can check the resistance by voice coil terminals using a multimeter or the resistance box of your car audio amplifier.
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