Alpine PDX-4.100 making my engine noises

[plyer3 10+ year member]

haha oh wow, ill use the one of the rca set from my mono amp and another from the store.

now im pretty sure its the headunit, but ill check the rcas just to be sure......

 

[adampit 10+ year member]

try this

http://www.caraudio.com/forum/showthread.php?t=147694

 

[plyer3 10+ year member]

try thishttp://www.caraudio.com/forum/showthread.php?t=147694

i have already tried that before all this....doesnt help, probably made it worse as i started hearing the nosies in the front after doing that. i undid the rca wire wrap and the noise is still there in the front....mehh

will test the rcas out tonight...

 

[nineball 10+ year member]

haha oh wow, ill use the one of the rca set from my mono amp and another from the store.now im pretty sure its the headunit, but ill check the rcas just to be sure......

you only need one set of rca cables to test. just connect them to the hu front outs and into the front channel of the amp. turn everything off, swap it to the rear outs and rear channel of the amp.

 

[plyer3 10+ year member]

will do

 

[plyer3 10+ year member]

Well, I finally tested everything. The front and rear speakers still make engine noise when using different set of rcas.

I made a new ground inside the radio, but still didn't help. Nothing else seems to work...

 

[nineball 10+ year member]

then i would say your hu is bad.

 

[plyer3 10+ year member]

time to get a new hu then

 

[plyer3 10+ year member]

ok, after moving back the amp under the seat, all the noises were gone.

it seems like one of the speaker's pos&neg speaker wires were switched.....rewired everything and now the noise is gone.

man, i feel better //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif