Tag: fix car amplifier

Common Car Amp Problems and How to Troubleshoot to Fix Them?

car amplifier check - best car subwoofer

The Complex Car Audio Systems are often difficult to fix by finding the root of the Issue to Troubleshoot the Issue and Fix them. Though the Components of both the Car Audio and Home Audio Systems are same, The Car Audio System is Subjected to High Temperature because of the Car & Auto Parts Working, The Car Audio System goes through the Vibration, Stress and High Temperature due to the Working of the Engine and the Auto Parts.

Types of the Car Amp Problems as below,

  • Amplifier Doesn’t Power on at All
  • Protect Mode Light Turns On
  • Amplifier is getting Hot or Shutting Down
  • Amplifier Volume is turning down
  • Sounds Like the Amplifier Is Clipping
  • No Sound Is Coming from Your Speakers
  • Hear a Lot of Hissing or Other Distortion from the Speakers
  • Subwoofer Sounds Like It’s Farting

Why did your Car Amplifier Stop Working?

The major Car Amplifier Problem occurs with the noise distortion and the Amplifier Shutting down due to the heat of the Engine or Auto Parts. These two are the Common problem which occurs frequently, and this Issue can be Troubleshooted easily with the below Steps and Maintaining the Proper Precautions.

Why does your Amplifier get Hot so fast?

There are several reasons why an Amplifier is getting Hot too fast and Shutting down because of the Heat, The Major Problems are as below,

  • The Speakers are blown out.
  • The power the Amplifier is getting is very poor.
  • The Bass Control Setting is too High
  • Too Low Impedance

Is it Normal for the Amplifier to get too Hot?

Amps get usually as hot or hotter than the outside temperature even being on without playing music. The smaller they are the hotter they may get. And when not turned on, after a cold night and you check them, they are way colder than the outside temperature, This is normal for any Amplifier so this Situation has also be to taken In consideration that do not make your Amplifier too hot, Take necessary Precautions to protect your Amplifier from being too hot.

What is Shorted Speaker(s)

Speakers which are blown or grounded to the chassis of the Vehicle, The Amplifier will still try to power-in the grounded Speaker. Now your Speaker will get too hot and will be Shutdown easily. Because our amplifiers can play into a direct short for longer periods of time than other amplifiers on the market the problem may go unnoticed for some time before the amplifier shuts down completely to protect itself. When it does, it is a warning sign to check the trouble before continuing to use the amplifier.

 

Guidelines to troubleshoot your Amplifier as below,

  • Problem – Amplifier Doesn’t Power on at All

Solution to the Amplifier Problem as below,

Amplifier should have the power both in the remote and power wires. If it is not turning on because of the Power is not supplied properly, It is time to troubleshoot the problem.

If the remote turn-on wire doesn’t have power, your amp won’t turn on. The remote wire acts essentially like your finger flicking a switch, where your finger is battery power, and the switch is a mechanism inside the amplifier.

If there is no power in the remote terminal, You need to check the radio connecting the Corresponding Wire. If your amp is wired incorrectly, and the remote turn-on is connected instead to the power antenna wire on the head unit, you may find that the amp only powers on sometimes. 

Using the Power Cables which are too small for the amplifier will cause the Thermal Shutdown of the Amplifier. 8-Guage Power & Ground Cable is needed for the Amplifier you are using. The Amplifier Power Cable should be 18” Long and should be the same size as the power cable, bolted directly to a solid, thick steel part of the chassis which is scraped clean of any paint or primer for best possible grounding. positive power cable should be attached directly to the vehicle’s battery using a high-quality battery post adapter and must be fused within 18″ of the battery itself. The power Cabling must be Setup Properly for the overall Performance of the Amplifier.

Amplifier should have the good power and the ground, that the remote wire is having the right Voltage when the head unit is turned on. Also make a Check that none of the Fuses are blown that you are not dealing with the busted amplifier.

Problem – Protect Mode Light Turns On

Solution to the Amplifier Problem as below,

The Amplifiers usually go into the Protect Mode to avoid further damage of the Components of the Amplifiers. If your Amplifier goes into Protect Mode of Light On, then you have a Faulty Speakers, Subwoofer Cable Etc. If the Problem is in the Speaker you can perform the Visual Inspection to rectify the Speaker and Subwoofer in the System.

Use Ohmmeter and Rectify the Grounded Speakers, if any speaker wires become loose and contact ground or if the speaker connections themselves are in contact with bare metal.

RCA patch cables that are grounded out or otherwise faulty can also cause the protect light to come on. To check this, you can simply hook up a set of good RCA cables to your head unit and amp. If that causes the light to turn off, replacing the RCA cables will fix the problem.

  • Problem – Amplifier is getting Hot or Shutting Down & Amplifier Volume is turning down

 

Solution to the Amplifier Problem as below,

 

The Speakers are blown out. The power the Amplifier is getting is very poor. The Bass Control Setting is too High, Too Low Impedance. The amplifier then “sees” a low impedance and tries to keep up with it but heats up due to the extra power it’s trying to make. Once it gets too hot, it shuts down for protection.

  • Problem – Sounds Like the Amplifier Is Clipping

Solution to the Amplifier Problem as below,

 

Audio waveform having a Sound distortion is known as Sounds Clippings by the Amplifier. When there is no Enough Power to the Amplifier from the Subwoofer or other Speakers. You Would need to downgrade or Upgrade the Speaker or the Amplifier. So if you feel like your woofer or subwoofer amp is clipping, the first thing you’ll want to do is compare the amp’s power rating with the speaker.

If you find that the amp has plenty of power for the application, then there could be a problem with your speaker wires, the speakers themselves, or the amplifier’s ground.

  • Problem – No Sound Is Coming from Your Speakers

Solution to the Amplifier Problem as below,

 

Is your Amplifier not turning “On”, Make sure your Amplifier is receiving Input from the Head Unit. Simply unplug the RCA cables from each unit and reconnect them with a good set.

Head Unit is turned On, Volume is Turned Up, Cycle through the Multiple Inputs , like the radio tunerCD player, or auxiliary input. After bypassing the installed RCA cables, then you’ll just need to replace them with a good set. If you get sound from one input but not another, the problem is in your head unit, and not your amp.

If you still don’t get any output from your amplifier, then you’ll want to try disconnecting it from the speakers in your vehicle and hooking up a known good speaker that isn’t in your car.

If the amp drives that just fine, then you have a problem with your speakers or wiring. If you still don’t get any sound, then you could have a faulty amplifier, although you’ll want to check that it isn’t in “slave” mode and that you don’t have conflicting filters before you condemn the unit.

  • Problem – Hear a Lot of Hissing or Other Distortion from the Speakers

Solution to the Amplifier Problem as below,

 

You would need to track down the source of the distortion, you need to know the potential cause,

Inspect the Patch cables and Speaker Wires.

If the cables that connect your head unit and amplifier run alongside any power or ground cables at any point, they can pick up interference that you will then hear as distortion.

Rerouting the wires so that they don’t come close to any power or ground cables, and that they cross at a 90-degree angle if necessary.

Using higher quality cables or wires with good shielding can also help.

  • Problem – Subwoofer Sounds Like It’s Farting

Solution to the Amplifier Problem as below,

 

Strange sounds can come from a subwoofer that’s overpowered, underpowered, or simply installed incorrectly, so getting to the bottom of this particular problem can take some work.

Eliminate the Problems with the Speakers, If the enclosure isn’t the right fit for your sub, then the sub typically won’t sound right either. If the speaker isn’t mounted properly, it can allow air to escape while you’re listening to music.

Impedance matching is pretty simple if you have one sub hooked to one amp — it either matches or it doesn’t. If you have multiple subs hooked to a single amp, then you’ll have to do some calculations based on whether they’re hooked up in series or parallel.

Should you find that the impedances match, then you’ll want to check both the power ratings of your sub and your amp and make the necessary corrections if the amp is either under- or over-powered.

In the event you are using a woofer (or a combination of woofers) that results in a load that’s lower than what the amplifier manufacturer recommends, the amp may shut down to protect itself.

Most common is the use of two 4-Ohm woofers wired together in parallel for a 2-Ohm load, then bridging the amplifier to that load – but the amp is designed for 4-Ohms, not 2-Ohms.

The amplifier then “sees” a low impedance and tries to keep up with it but heats up due to the extra power it’s trying to make. Once it gets too hot, it shuts down for protection.

  • Problem – Gain & Bass Boost

Solution to the Amplifier Problem as below,

 


The most obvious thing to check is your Gain and Punch Bass control settings. The gain adjustment (or control) is a level-matching control that adjusts the amplifier to work with the electronic piece(s) used before the amplifier.

Essentially, by dialing-in the gain control you’re telling the amp how much signal you’re putting into it so the amplifier will reproduce the signal accurately.

If you have the gain set too high, the amp will make full power right away, and you’ll have problems with distortion and “clipping”.

If the gain is set too low, the amp will still make full power, but it might not sound as loud as it should, and you’ll think you aren’t getting much volume.