Amp Turns On But No Sound

This is one of the most important issues you have to deal with Car audio may be encountered in the journey of becoming curious. Today I will tell you about Amp Turns On But No Sound.
Car stereo systems are complex because they contain only more than one component. And often, the failure of one of these components affects the performance of the other.
A car amplifier provides amplified signals to your subwoofer. The sub converts this signal into the sound we hear. But if there is something wrong with the AMP, you can’t hear anything.
This problem is different from a blown speaker where you get less sound (albeit distorted).
Some people think that no sound at all is due to bad or blown AMP, but this is not accurate and this could be due to many other reasons ranging from bad RCA cables to amp gains.

Amp has Power But No sound 

In this article, we will look at different solutions to this problem.

1. Check Amp’s Input and Output Signals

First, check the amp input connected to the head unit. You must ensure that it receives input signals from the head unit via speaker level inputs (high-level inputs) or RCA level inputs (low-level inputs).
To confirm this, we need to disconnect the RCA cables and connect our head unit to the amp using a new pair. Then turn on the head unit with increasing volume. If it is working with new RCA cables, it means that the old pair was at fault.
If only one of the two is working then it means the problem is with the head unit and not the amplifier. Next, we will check the output of the speaker.
Disconnect the amplifier terminals from the speaker and connect them to another testing speaker one channel at a time. If the amp is OK on all these channels, it means your speakers are bad. This could be due to speaker wiring or poor connection.

On the other hand, if there’s no output from the test speakers, it means the amp is faulty.

2. Check Subwoofer Settings

Most aftermarket stereos have separate subwoofer controls in their settings, which we can turn off by mistake. So you should double-check to see if the sound output is on and the DB level is above 0.

3. Make sure Amp is Mounted to a Non-Conductive Surface.

After that, you also need to make sure that no part of the amplifier is attached to any metal of the car. This can lead to many other problems, such as signal clipping and the AMP of the car. This can lead to many other problems, such as signal clipping and AMP going into safe mode.

4. Check Amp’s Ground and Power settings

If an AMP is not getting the required power from the system (in the first place), it will not amplify the audio signals. You can use a voltmeter to check that your system is supplying the necessary power to the amp.

To do this, you connect the voltmeter to the positive and negative terminals of the AMP. You should get 12V when the engine is off and 14V when it is on. If so, you should inspect electrical and ground wires to make sure they are not loose at all.

5. Remote Wire Fault

Car amplifiers come with a turn-on wire (also called remote wire) which is used to signal the amp through the head unit. When you turn on your car it is usually a blue wire with a white stripe (no need to be confused with solid blue wire for power antenna – just for radio) Waqf).

To test this, turn your head unit to a source other than the radio, and check the voltage between the amp’s remote on terminals and the ground with a voltmeter. If it’s about 12V, no problem.
But if not, switch the source back to the radio and see if you can read. If you do this, you only have the power antenna wire connected instead of the remote wire. If there is no voltage with any source (including radio), there is a problem with turning on your wires.


Well, these were some of the most common reasons why you are not getting any sound at all even when your amplifier is on.
As I told you guys you may have different reasons to experience this but if you have followed all the steps above then I am sure you will find the real reason.
I’m sure you liked this article. If you liked this article, please share it with your friends and family.
If you’ve encountered any other issues that don’t make a sound coming from your sub, be sure to let me know in the comments below.


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