Alpine deck popping noise on button press

[Parps]

Just installed an Alpine CDA-9885 in a '97 VW Jetta.

The problem is, any time I press a button to change a track or radio station (or anything else), the speakers make a "POP" noise. It also does this when you turn it on or off. Its pretty loud...and annoying.

I think it may have something to do with the factory amps (the car has a Bose system in it).

I turned off the internal amp of the head unit, and connected the RCA's from the deck, to a Factory Amp Integration harness. So basically, I'm sending line level outputs to the Bose amp/system.

Any clues as to what the problem may be?

Would a bad ground cause this? I've connected the ground wire from the factory plug to the ground on the head unit harness. Do I also have to ground the casing of the head unit somehow? or does the ground wire take care of that?

Sorry for rambling on...just don't know what to do...everything else works fine, just the stupid popping noise when I press a button.

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[Twistid 5,000+ posts]

ground

 

[jmoreno150 10+ year member]

yessir check ur ground

 

[jdawg 5,000+ posts]

try grounding the rca's to the deck

 

[Parps]

Dang..you guys respond fast.

I'll check it out tonight and let you know how it goes.

 

[Parps]

try grounding the rca's to the deck

The outside part (-) of the RCA's?

 

[jdawg 5,000+ posts]

like this

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

 

[blackbonnie 5,000+ posts]

Dang..you guys respond fast.
I'll check it out tonight and let you know how it goes.

thats what we do here, mainly cuz alot of the guys on this site are addicted to it and cant seem to get off, like myself

 

[Parps]

Ok, I tried

-grounding the RCA's to the head unit....no luck..still the same...

-grounding the head unit to the chassis...no luck..still the same...

any more ideas?

 

[Parps]

Is it possible that the head unit is defective?

 

[Parps]

Well, I've sort of solved the problem using a speaker level to line level converter.

I'm now using the speaker outputs from the deck instead of the RCA's. The popping noise is gone (except when I power off)

It does sound noticably worse when playing music, but what can you do....