Tip & How-To about Car Audio & Video

Car amplifier noise

Noise in Audio:

  • If noise is a "whine" that goes up and down with engine speed, confirm that Amplifier and any other source unit (Radio, EQ, X-over, etc) is properly grounded.
  • A "clicking" or "popping" noise at a rate that follows engine speed is generally induced by vehicles ignition system. Confirm that the vehicle is equipped with resistor plugs and plug wires. Or, ignition system may need service.
  • Speaker and input wires should not be routed next to the wired that interconnect lights and other accessories/equipment.
  • If above steps do not improve/clear noise interference, the system should be checked by a professional mobile audio installer.
If this tip in any way helped you please do not forget to rate it, thanks.

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1 Answer

03 saturn vue radio noise


You are getting alternator whine, that means you need to move your ground wire and if you have a amplifier then make sure your RCAs are on he opposite side of your car

May 21, 2013 | Car Audio & Video

2 Answers

Why the amplifier is getting the sound of the engine att he spekers? while having the car with the engine running, you can clearly hear the engine noise on the speakers


There could be a number of issues

1. Grounding
2. Kinda speaker cables your using

Check your wireing and make sure this is not grounded to where it can be interfered by the engine.

Aug 17, 2010 | Majestic MA4200R Car Audio Amplifier

1 Answer

Why do I have a high piched, whine through my audio system (that seems to align with the engine speed) when I plug my Sirius Sattelite radio into the system's Aux jack and power it with one of the vehicles 12v outlets? This is only a problem when using vehicle's power source.


The "noise" is coming from the alternator and is being injected into all powered accessories. Some devices are better at filtering than others.

Best way to eliminate the noise in your audio system is to add a low-pass filter (aka choke filter) on the input power wire to the audio system (red wire?). That will "pass" the noise to ground.

Since the whine is in the 800-5000 cycles per minute, like the engine rpm, you will need a low-pass filter around 5000x60 = 30KHz.

A decent car audio shop can install the proper ampere and frequency filter.

Oct 12, 2009 | 2007 Toyota Tundra

3 Answers

how to hook up equalizer to the amplifier


always remember source, amp, then speakers. ex: cd to eq to amp to speakers and it goes: out from cd player into eq, out from eq into amp, out from amp into speakers . hope this makes it easier for you.

Jun 23, 2009 | Sony TC WE435 Stereo Dual Cassette Deck...

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