Whining noise after installing sub?????

[yowhobedat 10+ year member]

i installed my sub today, and theres an annoying whining noise. with the radio on or off, its still there. Any suggestions on what it might be?

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[Kangaroux 5,000+ posts]

what kind of headunit do you have? power and RCA wires separated?

 

[yowhobedat 10+ year member]

the rcas n power are completely separated, even up to the amp. i'm using the stock nav. headunit. i had two amps in my car before, they were rated for more power, and i never had a problem. i installed my new amp and sub, and theres this whining that increased with rpms.

 

[Sephious 10+ year member]

You probably have a bad ground somewhere. You're getting alternator noise.

 

[keep_hope_alive Premium Member]

you obviously used ignition as remote turn on, which is why the amp is staying on after you turn the HU off.

need more info.

make/model of sub amp, pics of install, pics/diagrams of how/where you connected the amp to the stock system. etc.

whine is usually a ground loop. grounding the stock HU to the floor may help.

 

[yowhobedat 10+ year member]

i dont know what was used for amp turn on, i had the shop install my previous amp, then i installed my new one.

amp is audioque 1200d, sub is fi q 12. i spliced my rcas into the stock amp inputs. i didnt use a loc. just spliced them together. the hu is a stock nav. for a genesis coupe. i dont have any pics at the moment.

when i unplug the rcas, the noise stops. when i plug one rcas in, the noise is present. then when i connect both rcas at the same time, the noise is way more noticable.

and the nosie increases with rpms. im assuming its a bad ground, i dont kno where tho. i can only think of the rcas. thats the only difference between my old system and my new one. i used same grounding points, same power cables, same turn on. only thing different is where i got the signal from

any help is apprecaited

 

[Kangaroux 5,000+ posts]

stock radio might have something to do with it

 

[bstran11693 10+ year member]

did u try a new flux capacitor?

 

[sobe3yourself. 10+ year member]

did u try a new flux capacitor?

stfu and rtfo

 

[grandam888 10+ year member]

i spliced my rcas into the stock amp inputs. i didnt use a loc. just spliced them together. the hu is a stock nav. for a genesis coupe. i dont have any pics at the moment. any help is apprecaited

can you further explain how you used the rca's? does your stock radio use the stereos speaker output as the signal wire for the factor amp? if you cut the ends off the rcas and spliced them into the wires, you may be using a high output signal on a low level input on the amp. this may be the issue. also its the only thing that has changed since your last install.