Have you ever been listening to your favorite music and all of a sudden your subwoofer cuts out? It can be pretty annoying, not to mention puzzling. And, what about the subwoofer cuts out but the amp is still on?
Your subwoofer might cut out but the amp stays on as a result of an issue with the wiring, the sub itself, overdriving, or even the settings on your sound system. However, you can also fix this problem yourself, or you may need a professional. But, in some cases, you may need to replace the subwoofer.
But, why does the subwoofer cuts out when the amp stays on? How to fix it? What can you do to prevent it from happening again?
In this article, I will answer all of your questions.
What does subwoofer cuts out but AMP stays on mean?
If you’re like most people, you probably love listening to music. In fact, many of us wouldn’t dream of going a day without some tunes. But have you ever experienced an issue with your sound system where one component suddenly stops working while the others keep going? If so, you’re not alone.
Many people have this problem, especially with subwoofers. So, if you’re having issues with your subwoofer cutting out but the amp staying on, what does that mean?
One common issue is that the radio is turned up too high past 32, 36, or higher volume and the subwoofer hits a few music notes before turning itself off.
When it exceeds a certain volume range it becomes loud and causes a knocking sound. But, AMP still stays on.
However, if the volume is not turned up too high, everything will be low in general.
You might not have had this problem before and the subwoofer was playing loudly and properly.
And, maybe, you ran the gadget for a long time and now this is happening to you.
In addition, you may have other issues with the head unit, bass, and even AMP along with this problem.
Sometimes, the problem may persist even after you adjust all the settings, or replace a few parts. You may also have no problem at a volume below a certain limit.
If you’re a subwoofer user, you may also have experienced a situation where your subwoofer cuts out after about 10-15 minutes. In addition, the amp may not enter into protection mode or even not turn off.
The light may still indicate that it is on, and the light on the line output converter may show that it’s receiving power/signal. Moreover, the amp might not be hot at all.
You may be wondering what could be causing these problems. I will discuss it now.
Why does Subwoofer cuts out but AMP stays on?
If you’re a subwoofer user and your subwoofer cuts out but the amp stays on, it’s possible that you have bad wiring, a faulty subwoofer, or you may be overdriving the sub. However, the problem with AMP isn’t very common.
Let’s take a look at the reasons for the subwoofer cutting out but the amp staying on.
Wiring Issues
One of the most common reasons for subwoofer problems is wiring issues. If the wires are loose, frayed, or not properly connected, it can cause all sorts of problems, including the subwoofer cutting out.
Another common issue that is the wire may be touching the other speaker’s wires. It could also be that the white and red RC wires are crossed up.
Moreover, the remote wire for the amp is powered, which then causes the amp to stay on.
Bad subwoofer or speaker
Another possibility is that the speakers or sub itself is damaged. If there is a physical issue with them, it can certainly cause problems.
Sometimes, subs can also blow out or just stop working properly after using them for an extended period.
A bad ground
A bad ground can also cause this problem. If the ground wire is not properly connected, it can cause the subwoofer to cut out.
Faulty head unit
Another reason can be a faulty head unit. In some cases, the head unit may not be sending enough power to the amplifier. As a result, the amplifier stays on, but the subwoofer cuts out.
Incorrect amp settings
If the settings on your amplifier are not correct, it can cause the subwoofer to cut out. For example, if the gain or the low-pass filter is set too high, it can cause the subwoofer to cut out.
Low voltage
Another reason can be amp may be turned on but not getting enough operating voltage.
A lot of amps power is on at 6-10 volts, but the requirement can be 6-10 volts.
An issue with the fuse
If the fuse is loose or damaged due to too much power received by a sub or a short circuit, it can lead to this problem.
If the wrong size fuse is being used, it can cause this problem. It is important to use the correct size fuse to avoid any problems.
Subs being at too low of an ohm load
If the subs are being driven at too low of an ohm load, it can also cause this problem.
The amp may not be stable at the lower ohm load, and this can cause the subwoofer to cut out.
It is important to make sure that the amp is stable at the lower ohm load before using it.
The big three being not done
If the big three are not done, it can also result in this issue.
The big three consist of the battery, the alternator, and the ground.
Not having the electrical to support the amp
You may not have the correct electrical support for the amp and subwoofer
If the electrical is not up to par, it can also cause this problem.
It is important to make sure that the electrical is up to par before using the amp and subwoofer.
Overheating
One of the most common issues with subwoofers is overheating. If the subwoofer gets too hot, it may cut out.
It may happen due to a lack of proper ventilation, exposure to a heat source or overpowering the sub, running the sub for a long time, old faulty sub, or too much power.
Damaged voice coil
If you’re using a passive subwoofer, it’s possible that the voice coil is damaged. This can happen if the subwoofer gets too hot.
Sound system settings
It’s also possible that the settings on your sound system are causing the subwoofer to cut out.
If the volume is set too low, the subwoofer may not be getting enough power and will cut out.
If the crossover is set too low, the subwoofer may not be getting the frequencies it needs and will cut out.
You may also want to check the EQ settings. If the bass is set too high, it can cause the subwoofer to cut out.
An impedance mismatch
One other possibility is that there is an impedance mismatch between the subwoofer and the amp.
If the impedance of the two components is not matched, it can cause an issue.
A faulty amplifier
It’s possible that the amplifier itself is faulty. If the amp is not working properly, it can certainly cause the subwoofer to stop working.
The wrong size power wire
If the power wire is the wrong size, it can also be responsible for this issue.
Also, check out the subwoofer cuts out when the bass hits.
What to check if the subwoofer cuts out but AMP stays on?
If your subwoofer cuts out while the amp is still on, there are a few things you can check to try to fix the problem.
– First, check the amp to see if it is cutting off.
– Next, check the speaker wires to see if they are loose or if there is any damage.
– If the problem persists, check the connections in the back of the radio.
– Make sure that all of the connections are secure and that there is no damage.
– Ensure the power to fuse, ground, and batt.
– Check where the ground is.
– Check for overdriving the subwoofer.
– Check how much power the amp does at certain ohms e.g at 4 ohms.
– Know what the size of your fuse is.
– Check what size the power wire is.
– Take a look if the big three are done.
– Check what the size of your alt is.
– Check the remote wire for the amplifier.
– Test AMP in another sound system.
– Settings on your sound system.
– Check the subwoofer.
How do you fix a subwoofer that is cutting out but AMP staying on?
There are a few things that you can do to fix a subwoofer that cuts out but the amp stays on.
Subwoofer cuts out but amp stays on? We’ve got solutions!
1. Checking the wiring and
If you’re having this problem, the first thing you need to do is check your wiring. Make sure all of the connections are tight and that there is no damage.
2. Detect the cause.
If the problem isn’t with wiring or connections, next you have to check all this that is mentioned above and try to figure out the possible cause of the problem. Then, you can go to the next step which is fixing the issue.
3. Troubleshooting sound system settings
You should check the settings on your sound system. Make sure the volume is not set too low and that the crossover is not set too low.
4. Testing amp in sound system
A simple solution is to test the Amp in another sound system. For car subs, you can test it on another car. If it sounds good, the problem is likely with your ground wire.
5. Fixing the grounding point
Next, you have to move the grounding point. Then, check the resistance from the grounding point back to the negative terminal of the battery.
Change the ground from a 4 gauge to a 0 gauge- this usually does the trick! If not, try grounding the back of the head unit from an RCA jack to a screw on the deck.
Still no luck? 0 gauge the power wire. This should fix the problem!
6. Troubleshooting the head unit
Another solution is to check if the head unit is sending out the proper signal. Oftentimes, the problem lies in the head unit and not the amp.
In that case, put out a voltage that the amp can’t detect. See what happens if you turn the gain all the way up.
7. Performing the big three
An effective solution to a subwoofer cutting out the issue is to properly do the big three. Check nicely and do or fix the battery, the ground, or the alternator.
8. Solution for overheating issue
If you’ve shaved off the paint to get bare metal, try measuring the amps- they might be overheating and going into protect mode.
In addition, make sure that the subwoofer has proper ventilation. If it does not, you will need to find a way to provide proper ventilation.
9. Fixing impedance mismatch
Check the impedance of the subwoofer and the amp. Make sure they are matched. If they are not, you will need to find a way to match them.
10. Solution for incorrect amp setting
If you’re having this problem, the first thing you should do is check the settings on your amplifier. Make sure the gain is set properly and that the low-pass filter is not set too high.
11. Fixing a bad amplifier
Check the amplifier to make sure it is working properly. If it is not, you will need to find a way to fix or replace the amplifier.
If you’re having this problem, the first thing you should do is check the amp to make sure it is stable at the lower ohm load. If it is not, you will need to find an amp that is.
12. Getting the right size fuse
If you find this problem, the first thing you should do is use the right size fuse.
13. Replacing a damaged fuse
If the fuse is damaged, it will need to be replaced.
14. Fixing damaged voice coil
To address the damaged voice coil issue, you should do is check the voice coil to make sure it is not damaged. If it is, you will need to replace the voice coil.
15. Having a proper electrical support
If you’re having this problem, all you need to do is check the electrical to make sure it is up to par. If it is not, you will need to find a way to get the electrical up to par.
It is also important to use the correct size of the power wire to avoid any problems.
16. Repairing the bad subwoofer
If the problem persists even after performing all things above, check the subwoofer itself. If it is damaged, you can try to replace the faulty part yourself. You may need to replace the voice coil, or cone depending on the situation.
But, you must take help from a professional if you have no experience with electric devices.
17. See a professional
If you’ve tried all of these solutions and the problem still persists, you may need to see a professional for help.
18. Replace the subwoofer
If the problem is with the subwoofer itself, you will need to replace it.
Check for warranty. If your sound system is still under warranty, you may be able to get it fixed or replaced for free.
What can you do to prevent a subwoofer from cutting out when the amp stays on?
There are a few things you can do to prevent your subwoofer from cutting out when the amp stays on.
Firstly, make sure that you have the right size power wire running to your subwoofer. If the power wire is too small, it can cause the subwoofer to cut out.
Secondly, another thing you can do is to make sure that the subwoofer is mounted securely. If the subwoofer is not mounted securely, it can vibrate and cause the subwoofer to cut out.
Thirdly, you can try to add a subwoofer amplifier. A subwoofer amplifier will help to increase the power of the subwoofer and prevent the subwoofer from cutting out.
Finally, you must never buy a cheap subwoofer. A cheap subwoofer will not last long and will eventually cause the subwoofer to cut out. Always buy a quality subwoofer from a reputable company.
By following these simple tips, you can prevent your subwoofer from cutting out when the amp stays on.
Conclusion
There are many reasons why a subwoofer may cut out but the amp stays on. The most common causes are wiring issues, bad sub, a faulty amplifier, or an impedance mismatch.
If your subwoofer is cutting out, first you have to check the connections. Then, according to the cause, you have to fix it by doing several things such as adjusting the settings on your sound system, replacing the amplifier, and solving the impedance mismatch.
If you have tried all but still have the issue, it may be time to buy a new subwoofer.
I am Pallab Kishore, owner of Sound Gears Realm. I like to try different sound gears and home theatre systems. I like to share with you my experience with these devices, especially subwoofers so that you can get help to solve any problem.