crunch gp3000d pro

[jdmferio13 10+ year member]

my amp is making a slight whine noise when i start the car. not sure it does it once i start listening to music cause its way in the back and not that loud. not sure what it is i dont think it did it before what could this be

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[thehardknoxlife 10+ year member]

my amp is making a slight whine noise when i start the car. not sure it does it once i start listening to music cause its way in the back and not that loud. not sure what it is i dont think it did it before what could this be

The amp itself or is it coming through the woofer? Sounds like a bad ground.

 

[jdmferio13 10+ year member]

its the amp maybe it always does it its just a constant little sound when it turns on do all amps do that not sure maybe its the ground

 

[audiolife 5,000+ posts]

what is the voltage @ the amp when you hear this noise? Some aplifiers will barely make a whine noise where others screatch to low voltage before they smoke.

 

[jdmferio13 10+ year member]

its not even low its at 14.4-14.5 i have all the volume down and amp down its just when i ever i started the car today i noticed it was making a slight noise dont know might have to check the amps voltage but it should be okay

 

[99grandprixGT 5,000+ posts]

what you got for electrical?

 

[PsychoTheRapist 5,000+ posts]

It's probably power supply noise.. my gp3000D did it too.

 

[jdmferio13 10+ year member]

It's probably power supply noise.. my gp3000D did it too.

what do you mean power supply noise.what type of noise can you describe its not really notcieable unless you get right up to it.i think its my batt in trunk the groung terminal is loose

 

[jdmferio13 10+ year member]

i just went out and turned the car on and its not doing it i messed with the terminal could be that maybe not maybe they just make a nosie when they are on just never really noticed it

 

[jdmferio13 10+ year member]

whats the best way to check all grounds with a meter or so not sure i wanna take them all off and sand them down even more just to see if it works

 

[Pioneer~Saturn 5,000+ posts]

Not sure if they have fans in them but my XXX10k's fans make a good amount of noise when I start up the car then they settle down.

 

[shavenblazer 10+ year member]

Do you have a pioneer hu.

 

[jdmferio13 10+ year member]

no its a sony but now it doesnt do it i just think it was th ground

 

[Grinder1989 5,000+ posts]

Grounds are not going to cause the coils to whine. Older amps usually do it, you can pop the cover off, grab the coils and see if they are loose. Sometimes just giving the coils a slight twist will stop them from whining. It's nothing bad though, just leave it alone.

 

[jdmferio13 10+ year member]

well how do i fix it then is very low like i said you have to be real quiet and nothing on just to here it i just dont know what to do let it go or open it up to see whats wrong the amp light stays green all the time