Amp Has Power But No Sound From Speakers or Subwoofer

Amp Has Power But No Sound

Amp Has Power But No Sound From Subwoofer or Speakers [SOLVED Updated 2022]


An amplifier increases music quality by providing more power to your speakers and subwoofers. This means that if your amplifier has a problem, the sound quality may suffer significantly. One such problem is when the amplifier has power but no sound.

We’ll tackle this issue in this article, where your amp has power but no sound from your subwoofer or your speakers have power but no sound.

Amp Has Power But No Sound From Speakers or Subwoofer

Overheating, overcurrent, overvoltage, a power system fault, a blown amplifier, a blown output channel, or a blown fuse are the most likely causes of this problem.

Let’s dig a little deeper.
What Are Amplifiers and How Do They Work?

Before we look at the probable causes of the lack of sound, it’s important to understand how an amplifier works from the input side to the output side.

What is the function of amplifiers?

We’ll be in a better position to choose the appropriate troubleshooting methods once we’ve developed this understanding.

The sound signal from your music source is amplified by an amplifier, which then sends the amplified signal to your speakers and subwoofer.

The technique of increasing the magnitude of an audio electrical signal is known as audio amplification. Due to the size of the signal, it may occasionally distort the electrical signal on the amplifier’s output.

If we examine an amplifier that is powered by a voltage of, say, 12 volts, the output alternating signal cannot have a voltage larger than that or clipping will occur.
Possible Causes And Solutions For An Amp That Doesn’t Make Any Sound

If an amplifier fails to create any sound after it has been turned on, the following are some of the possible causes:

Overheating, overcurrent, and overvoltage faults in the power system, as well as a blown amplifier

Overheated amplifiers frequently have an overvoltage or overcurrent problem, resulting in severe sound distortion.

However, if the problem is not addressed quickly, the sound may vanish entirely.

Furthermore, blown amplifiers will immediately cease to function because no sound signals will be supplied to the speaker units. Even if the amplifier has blown, you may still be able to turn it on. Let’s take a closer look at this.
Overheating, as well as overcurrent or overvoltage, are two of the most common problems.

There are a variety of issues that can cause your amplifier to overheat. Here are a few examples:

Using too much power on the amplifier
Circuitry that is faulty
For a long time, the amp was turned on.
Overdriving the amplifier
When the amplifier is exposed to direct sunlight or is in close proximity to heated surfaces,
The amp’s cooling system is broken.

When an amp gets too hot, it switches to protection mode. Overheating caused by overcurrent or overvoltage, on the other hand, is more likely to blow than to go into protection.

overheating of the amplifier

Switch off the power, unhook the appliances, investigate, and repair the issues causing the overheat if you notice your amp is running very hot and not providing any signal.
2. The Electrical System Is Defective

A malfunction in the amplifier’s power system is one of the issues that can cause the sound signal to vanish.

Either the wiring system is incorrectly installed or the remote is malfunctioning. Check and alter the wiring if you have the requisite technical knowledge to ensure that the amp is correctly powered.
3. A Wire Fault In The Remote

A remote system is usually used to control amplifiers. Your speakers and subwoofer will not get any sound signal from the amp if the power button on the remote is turned off.

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When the remote is turned on but the remote’s wiring system fails, the same thing happens. Manually turn on the amplifier.

Check the remote system’s battery setup as well.

If the batteries are not properly installed or the cables from the battery unit are rusted or detached, the remote will not work.

To fix this issue, clean the rust off the remote lines, properly install the batteries, reconnect any damaged wires, and make sure the remote works.
A Faulty Power Wire is number four.

Current is sent to the amplifier through power lines. Your amplifier’s power signal wires connect to the speakers or subwoofer. It’s possible that one or more of these wires has burned out. This might easily happen if the gauge of the wire used is improper, for example.

Wiring an amplifier

Because some of the energy utilised to drive current through the wires is converted to heat, this occurs.

Very thin wires heat up more quickly, and if they can’t keep up with the current, they may burn out. It’s possible that this is why the sound signals aren’t reaching the speakers or subwoofer.

To address this, make sure that all cable sizes correspond to the maximum amount of current that can be carried.

Incisions and corrosion, on the other hand, might alter the current passage through the wires. If any of the wires are corroded or incised, they may not be able to transmit enough power to the amp.

As a result, the amp may turn on but will not be able to drive the subwoofer to make sound.

When working with electricity cords, turn off the mains and repair or replace any broken wires. You can use a multimeter to check for voltage in the cables and replace any that are bad.
5. Impedance Misalignment

Amplifiers are made to handle specified impedance levels or ranges of speakers and subwoofers.

If either the speaker or sub impedance is too high or too low to be supported by the amp, there may be an issue of unmatched impedance between the powered speaker or sub and the powered amplifier.

The system may be overwhelmed and go into protect mode if your subwoofer takes too much current from the amplifier. You will not hear any sound if the sub pulls too little current due to a significant impedance differential.

If your amplifier is rated at 4 ohms, your subwoofer should be rated at 4 ohms as well, and so on. Replace mismatched subwoofers or amplifiers based on which component is easier to access or is less expensive to replace.

Verify that the protect mode lights are still turned on. If the lights are on but the amp is properly matched to the subwoofer, the subwoofer, subwoofer cables, or even other components connected to the amp may be defective.
6. The Speaker Connection’s Polarity Mismatch

A mismatch of the polarities in the various ports could also be the cause of no sound coming from a powered amplifier.

We expect no sound to be produced if the polarity of speaker cables connecting the amplifier are reversed.

As a result, you should double-check the wire connections to ensure they are properly linked.
7. Fuse Blown

For self-protection against overcurrent, subwoofers contain built-in fuses or circuit breakers. The subwoofer will not power up if there is a current urge or a short circuit, for example.

fuse in amplifier blown

This is most likely the problem if your circuit breakers have tripped. However, before replacing a fuse, you should first identify and correct the problem that caused it.
How to Repair a Bassless Amp

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When your amplifier turns on, but no sound comes out, this is a regular problem. This could be attributed to a multitude of factors, such as:

Amp is unable to detect input.
The volume is too low, and the headphones are inserted into the wrong jack.
Headphones aren’t properly attached, and the amp was accidently turned off by hitting too many buttons at once.

If your amplifier goes on but no sound comes out, the first thing you should do is double-check all connections. Make sure the power cord is plugged into both the wall and the amp. It’s also a good idea to plug the cord into a working outlet.

Next, verify sure you’re not using another device, such as a smartphone or laptop, to play music. If you’re using headphones, double-check that they’re inserted into the correct jacks and linked to the headphone port on the front of your amp.

Finally, if your amplifier turns on but no sound comes out, and you’ve done everything else, try turning it off and on again to see if it works this time. If not, contact customer service for help resolving the problem over the phone.
What Should I Do If My Amp Is Turned On But No Bass Is Coming Out?

Make sure the amplifier is turned on and plugged in. Connect the amplifier to a power source, such as a wall socket or extension cord, and press the power button to turn it on.
Make sure your headphones are properly plugged in if you’re using them.
Check that an external device, such as a CD player or turntable, may be connected to your amp via the AUX input or RCA connections if you’re utilising external speakers.
Increase the volume on your amplifier. This can be accomplished by increasing the volume on your amplifier until you hear sound coming from your external speakers or headphones.
Check to determine if different audio equipment works properly by connecting it in.

Why isn’t there any sound coming from my subwoofer?

Make sure it’s not a setting problem by adjusting the stereo settings on the sub. Check to see that the sub cables are connected to the amplifier securely. Examine the amp input and output, as well as whether it’s set to the correct voltage.
The amplifier is turned on, yet there is no bass.

If your amp is turned on but not providing any output to your subwoofer, there could be a problem with the power system. Check whether the remote’s power button is turned on or not whether the amplifier cables are correctly connected.
What Should You Do If Your Subwoofer Fails?

First, double-check that all of the connections are in working order, including speaker wires, outlets, power cables, and fuses. Examine and test each one for damage, disconnections, or poor installation. Review the system and menu settings next. Replace any damaged connections with working ones, then turn the subwoofer back on and adjust the level.
What Is The Best Way To Diagnose A Subwoofer Issue?

Test the sub by softly tapping the other end of the cable’s central conductor. If the subwoofer is turned on and tuned properly, you should hear a hammering sound from it. There could be a problem with the subwoofer if you don’t hear a response sound.

Several issues can be related to the lack of sound, despite the fact that your amp is turned on. Before connecting and trying to run your various devices, connections, and components, it is recommended that you troubleshoot them.

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