Why does my subwoofer cut in and out

While traveling, I switched the audio system and played my favorite music to enjoy my ride. Guess what happens? The subwoofer keeps cutting in and out, and the explosions sound dry. And I am finding the reason why my subwoofer cut in and out.

Is your sub-cut in and out? And makes you irritated and worried? And you are looking for the answer to why my subwoofer cuts in and out. You are in the right place.

I’ve faced this problem numerous times, and there are different reasons for sub-cut in and out. In this article, we will discuss the reasons and their solution.

If you face the same problem, you must read the complete article. I am pretty sure you will get your solution. So let’s move on.

Reason and Solution for Subs Cut In and Out

1. Amp goes to protect mode. 

Amplifiers move to the protective mode to carry out the instructions. To safeguard both itself and subsequent chain links, it turns off. The power LED will become red or another scary hue when the amps are in protect mode, or the display may flash “protect mode on.” Numerous factors can cause amplifiers to enter protect mode: inappropriate gain settings, loose connections, or faulty installation.

All speakers, including the subwoofer, lose power when the amplifier enters protect mode. Finding the cause of the Amp’s protection mode is the only way to resolve this issue; therefore, do it now.

Solution: Turn off protection mode

It’s recommended to get the Amp checked by a professional because an amp may enter protect mode from overheating problems to blown-out drivers or fuses. Even if you turn off the protect mode and only replace the Amp’s fuses, a deeper underlying problem could still cause the power to go out in your house.

2. Grounding problem in Amp

Grounding issues can short your speakers, damage your expensive amplifier, increase noise, and cause many other issues. When the subwoofer starts cutting off, you should first check for faulty ground.

The electrical circuit is completed by grounding, and if there is a problem, the power-hungry subwoofer might continually go out or not even get any power. Additionally, it may harm the system’s speakers, subwoofer, amplifier, and other parts. Additionally, people approach this issue incorrectly. Using a multimeter to test for continuity could be ineffective.

When you have grounding problems, the subwoofer will shut off at a high gain. However, there would be a humming noise at low gain. This noise can help you pinpoint the issue. Turn the gain knob, starting with the amplifier. The amplifier is in trouble if the humming noise varies. If the Amp is the problem, try the speakers next and connect them to a different amp. In this manner, keep removing components until you can identify the problematic component. The defective gadget needs to be checked out and fixed after that.

Solution: Fix loose connections

Make sure there are no connection issues before fixing the poor ground. Verify the connectors and look for any loose connections.

Check for loose connections and check if the connectors are corroded. You can also swap out the cables to check if the ground issue is solved.   

3. Low voltage

The majority of the time, this problem affects car stereos. There are a lot of electrical currents used by your amplifier. Your house has all it needs to supply current. Additionally, your home receives consistent electrical power transferred to the Amp via an adapter and converted to DC. With automobiles, it’s a different matter. Your subwoofer may stop working if the voltage drops too much and the alternator cannot generate enough electrical current.

Everything relies on your automobile’s many speakers, connectors, and other electrical gadgets. Your car’s electrical system becomes increasingly susceptible to voltage drop with each connection. The amplifier doesn’t get enough juice if you have a setup at home that consumes a lot of power with a 9.1.4 Dolby Atmos system. 

Solution: Upgrade amp voltage

Ensure the problem is due to an exposed electrical system in your car. You can check the voltage at the Amp with a multimeter. If it dips below 12 volts, you must upgrade your amplifier to prevent the subwoofer from cutting out. 

4. Amp overheating and clipping 

My subwoofer would occasionally go off after playing music for a few hours. This issue mystified me for a long time before I realized that my overheated Amp was to blame. Clipping, poor ground, an improper impedance match, blown speakers, and other factors can cause amplifiers to overheat.

Another significant issue strongly related to thermal stress is amp clipping—distortion results when an amp pushes the signal beyond what it can handle. Excessive clipping can cause your amplifier to overheat more quickly and frequently enter protect mode. The speakers and subwoofer lose power as a result. Now that amp issues are over let’s look at other issues that can cause a subwoofer cut. 

Solution: Reduce the gain setting

Changing the gain setting is a simple approach to address this problem. If clipping occurs, reduce the gain setting or volume right away. Additionally, this ought to eliminate overheating problems and permit uninterrupted music enjoyment. Ensure that your amplifier’s RMS output does not exceed your subwoofer’s maximum RMS rating. Additionally, confirm that the speakers’ impedances are correctly balanced.

5. Clogging and interference

Another issue with a wireless subwoofer is crowding and interference. My house has several WiFi-capable gadgets, including consoles, intelligent refrigerators, computers, and smartphones. There is a tonne of things that can use Bluetooth. These devices introduce interference, and if the subwoofer signal overlaps with them, it could result in interruptions. Additionally, if you have a single WiFi router and an excessive number of WiFi devices, your network may get overloaded and experience the same issues.

Solution: Disable unnecessary connections

Disabling as many unnecessary connections as possible helps to lessen interference and crowding. All of your unused gadgets should have their WiFi and Bluetooth turned off. In addition, you can upgrade to a mesh WiFi network to lessen congestion and connect your subwoofer to your router’s 5.0 GHz band. Your subwoofer won’t keep going out when there is less interference and less traffic on the network.

6. Cone Seal Failure

If you’ve checked for all of the mentioned issues, your subwoofer is probably blown, and cone seal failure is the leading cause. The subwoofer wouldn’t produce any sound if it were destroyed. The sub would sound dry, lack a lot of punch, and be unable to provide a controlled bass response if substantially broken. The subwoofer’s coils may include damaged components, which causes the Amp to act strangely until it loses power.

Solution: Replace the sub

Using a multimeter, you can adjudicate whether your subwoofer is damaged. Connect it to the terminals on the rear of your subwoofer after changing the reading setting from Volts to Ohms. If it measures less than 1 Ohm, the circuit is a ruined subwoofer and needs to contact customer support or get fixed by a third party. 

7. Wire diameter problem

Wires are crucial to any speaker setup unless you have a wireless system. To drive speakers and convey enough power, wires must be thick. When the base is very boomy and thumpy, the subwoofer can demand a lot of power, making it a challenging driver. If the speaker wires have a lot of resistance, the amplifier will be attempting to pull more power. This may cause a fuse to blow, or the amplifier to enter protection mode would turn off the subwoofer in such a case.

The less expensive 16 gauge wire is advisable if your subwoofer is placed up to 50 feet from the Amp and has an impedance of 8 Ohm. However, you may want to invest more on a thicker 12 gauge wire if your sub is more than 50 feet away and has a low impedance of 4 or 6 Ohms. 

Solution: Use Thick Wire

Fortunately, I can fix it quickly. The wires connecting your subwoofer to the speaker must have the proper thickness. American Wire Gauge (AWG) measurements are used to determine wire thickness. A thinner wire results from a higher AWG. A wire with a lower AWG is thicker. To reduce current flow resistance, the subwoofer requires relatively thick wire.

8. The Sub is very distant

A wireless subwoofer will have all the issues that come with wireless technology. A wireless subwoofer would suffer from being too close to ordinary speakers, which can be placed wherever you like as long as you connect them with sturdy speaker cords. The WiFi signal will frequently cut out if it isn’t strong enough, which will cause the cut-out.

Solution: Install repeater near Subwoofer

To see if it is, measure the distance between your wireless subwoofer and router. Check if the issue exists after relocating the subwoofer closer to the router. Installing a wireless repeater near the subwoofer will also address this problem.

Frequently Asked Questions

Why does my amplifier constantly stuttering?

An amplifier may overheat and shut down for a variety of causes. The four most frequent ones are: blown or grounded speakers, subpar power and ground connections, an impedance (load) that is too low, and excessive Gain/Punch Bass control settings.

Why do the speakers in my car occasionally go out?

The speaker wiring is frequently the issue. The speaker wiring, which frequently breaks or crimps where it enters a door, might result in a complete loss of sound. A defective amplifier or poor wiring to the amplifier could be the issue. If everything else is in order, the head unit may have malfunctioned.

Does dust affect the subwoofer?

Dust is not a significant problem, as long as you do not have thick layers. Breathing dust is terrible, and we know subs move air and will also move… dust. Better have a dust-free room in any case.


Why does my subwoofer cut in and out is a very tiring question? There might be a simple solution if your subwoofers keep cutting off while driving. Tighten the wiring around the subwoofer and ensure your car produces enough power. If none of these things work, your amplifier may be the problem.

If this is the case and none of these fixes work for you, your subwoofer may have a more complicated problem. Consult an audio expert for assistance, or get in touch with the maker to find out how they can best help you with this issue.

I hope this post should assist you in fixing your problem so that you can enjoy rich music with all the preserved in the low frequencies. For more information, read out related posts.

Leave a Comment