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Old 13-03-2010   #1
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Thumbs down Cracking / Popping Sub

Hi, i have 2 12" vibe slick subs and they are both being powered by a vibe a7 amp, and when i was messing with the settings on the sub, say the gain is at about 3/4, when you slowly turn up the bass boost, there is like a section where you get a really bad popping /crackle, and if the gain is at a different setting then the crackle will happen at a different level when the bass booster is change and so on...

The crackles volume doesn't change when the volume of the headunit is changed, and i have a bass booster remote dial at the front of the car and when i hold the whole thing in my hand the crackle souns slightly changes, ( its metal )..
The sound doesn't change when you accelerate, but does when you turn the hazard lights on as the crackle seems to follow the sound of the "ticking"
Also strange that there is no crackle when the ignition is on, but only when the engine is running.

Phwoar! lol, thats all the info i can give you really, hope someone can help lol
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Old 13-03-2010   #2
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Re: Cracking / Popping Sub

You have got Rev Fm lol theres interferrence from the cars engine theres probually got bad wiring, un-insulated wiring.
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Old 13-03-2010   #3
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Re: Cracking / Popping Sub

lol i have never heard it called that. It does sound like you are geting ground loop interferance. Is this fitted using the standard hu?
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Old 14-03-2010   #4
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Re: Cracking / Popping Sub

I'm not sure what that would sound like, when you say loop, if you mean the same sequence of different crackling over and over then yes, and the hu is aftermarket, but this has only happened after i had a new amp and installed a 4 gauge wiring kit
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