Question about Car Audio & Video

3 Answers

Alternator whine Here's my problem: I just finished installing my car audio system and everything was doing fine until 1 of my amps blew up. (it's the one powering my subs)and so i had it replaced. during the span of absence of the other amp, my systm suddenly developed a whine, I tried interchanging the amps but its no use. tried changing the grounding of the amps, still, no good. Re-route the wires? failed. it's really pissing me off coz i can't help playing my music at high volumes just to mask the noise. it irritates me so much i end up putting the stereo off instead. Please help me!

Posted by on

  • 3 more comments 
  • 4A-FE Sep 17, 2007

    tried them, still there. went to a local audio shop, well, the noise lessened but didnt disappear completely. what if i ground the head unit and amp at the same point in the chassis?

  • 4A-FE Sep 17, 2007

    okey.. thanks later....

  • 4A-FE Sep 18, 2007

    still whines! and no wonder my first amp burned up, RCA's were damaged. i think i'd start re-wiring everything again? i already set my amp gains to minimum and still there's the whine. anyway, thanks for the advice pyroman. appreciate it....

  • TRIPCUZZ Dec 02, 2007

    I have the same problem. Tried all the above including the loop isolator. it helped but i can still here it. I'm thinking it maybe my head unit. One day i went to turn on my stereo and found that no sound was coming thru my speaker wires. the only way i heard any music was thru my 6x9s and subs simply because they hooked to amps. only my rca outputs produced sound signals and my speaker wires seemed to be shot. the only speakers that ran directly to the head were my door speakers. anyway, once all this happened, the whining started. IDEAS ANYONE???

  • MARGNOSIS3US Aug 26, 2008

    HI, I have the same problem but no solution yet.



    THX.

×

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have an alternator whine also i've checked, double checked, triple checked my wiring i've put in ground loop isolators, inline power filters with the alternator, i have 2 amps one is a brand new alpine 2-channel, tried new rca's, vehicle is a 07' chevy silverado classic any suggestions

Posted on Oct 28, 2009

Ad

I had the same problem. already rewire my whole system, but it didnt work. the only point of failure in my case was my HU and amp. since its easier to change the amp, what me and my installer did was try a known-good amp. several known-good amps. and all amps didnt produce that annoying alternator whine. so what i did was have my amp checked. after 2hours of repair, alternator whine already gone. the one who repaired my amp said that during the amp istallation, the (+) cable touched the body of the amp while the (-) cable is already connected to the amp. that caused one of the components inside the amp going bad. might as well have your amp checked. i can bet my life its the culprit on your case

Posted on Sep 16, 2008

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 150 Answers

Try purchasing a "ground loop isolater", when your head unit and amp are grounded in 2 diffrent locations the diffrence in volatage to ground between the two will cause interference. Check the below link for more details, can be purchased of a shelf at you local radioshack http://www.radioshack.com/product/index.jsp?productId=2062214&cp=&kw=ground loop&parentPage=search Hope this helps L8R

Posted on Sep 17, 2007

  • Patrick McGee
    Patrick McGee Sep 17, 2007

    That will definatly get rid of teh interfernece from the ground loop, go ahead and try that, get back to me if you still have some noise.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Amp fuse 30a keep blowing


You have possibly melted a couple of wires together along the radio circuit. Also the radio unit itself has 1 or more protection fuses actually inside the unit that have blown, usually at back of unit in little bay near the wire clusters.
Check your relays too, a blow out through jump starting can do all sorts of little burn-outs.

Oct 15, 2016 | 2006 Lexus Rx 330

1 Answer

JL Audio 750/1 installation help


upgrade all 12v wires running to your system to 0 gauge to kill you wiring to small problem when dealing with systems bigger is better double check to see if you alternator is putting out enough power for everything just because it say it will doesn't mean it does upgrade your capacitor seems to be falling you because there made to store power when needed and also get your battery check for any defects and add and extra just for your system

Jul 31, 2012 | Car Audio & Video

2 Answers

I recently started to get really bad alternator whine noise from all my door speakers! it was working fine until i re-ran all the door speaker wires because my dumb cousin was using a very thin speak


hi, your problems could be many. this fault can be caused by a weak/old battery, poor quality/wrong gauge of battery B+ cable, very poor level of amp ground connection. this fault can be caused by a faulty rca output/preamp line out circuit from the head unit or crossover unit. this fault can also be caused by the antenna not being properly grounded to the vehicle chassis! best you check out you local installer if you battling with this fault.

May 22, 2012 | Pioneer Car Audio & Video

1 Answer

I hooked up a car amp and when i put the fuse in,it blew.then i disconnected the power,installed the fuse and as soon as i touched the power cable,the fuse blew again...


Hello
Some kind of dead short is there. It may be inside the amp circuit of with outside wiring. You have to find it by meter check. Contact a auto electrician and let hinm detect the fault. OK.

Jan 16, 2012 | Pioneer GM-X354 Car Audio Amplifier

1 Answer

I cant stop the whine


Ok, if it only happens when the engine is running and the noise changes with the gas, that's alternator whine. Alternator whine is caused by the ambient noise in the voltage which is produced by the alternator. Alternators don't make DC current, they make AC current. The AC current is then converted to DC current and then sent to the rest of the car. The noise comes from an imperfect conversion from AC to DC. That noise travels down the power cable to the amp and causes noise in your speakers. This is often called "dirty power". Dirty power can be variations in voltage, inconsistent current, or noise within the voltage. One of the simplest ways to clean up noise in a car stereo system is to use capacitors. If you add a capacitor to your system just before the amplifier's power cable, it will help filter out the noise from the alternator. Start with 1/2 Farad or 1 Farad. That should be plenty to clean up the noise. The capacitors will also have a positive effect on your amplifier's thermal and sound performance, but you may not notice it.

May 14, 2009 | Performance Teknique ICBM-892 Car Audio...

1 Answer

Whining and crackling noise


it might be or there could even be a loose wire in there somewhere. did you install everything yourself?

Apr 14, 2009 | Car Audio & Video

2 Answers

Whining noise @ acceleration?


You have a bad ground somewhere. You also may nneed to replace your spark plug wires. The deck is getting interference from the engine due to a grounding problem.

Best of luck

Jan 30, 2009 | Panasonic CQ-C3301U CD Player

3 Answers

2 12w6v2's with a 1000/1


I dont know how you blew both subs with a 1000/1. the subs have an rms of about 400w. according to jl,the sweet spot for them is about 500-600watts. are you sure that you had the jumpers wired correctly and the amp at 2ohms?

Jun 11, 2008 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

High Pitch Whine from Amp (not speaker)


make sure your rca andpower/remote wires are ran on seperate side of your car.it maybe recieving some kind of interference from the alternator. try buying higher shielded wiring too

Apr 20, 2008 | Hifonics Brutus BXi 1206D Car Audio...

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

2,109 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4917 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

yadayada
yadayada

Level 3 Expert

78267 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...