Question about Sony Car Audio & Video
I have a sony 350watt 2 channel amp running 6x9s in my 1999 holden commodore executive series 2 . There is a whine sound but im not sure where its from. I used a filter but the sound is still there. The powerwires and audiowires are seperated along different sides. Iam sure its from the grounding of the earth because there is no sound on the top of the towbar. I place the earth on the negative terminal on the battery but still makes sound, thats the best earth in the whole car. Where is the best earth position other than the battery and enginebay in a 1999 holden commodore executive series 2?
I FOUND WHEN RUNNING MY AMPS IN MY COMMODORE, THAT THE BEST EARTH IS ACTUALLY THE SUB FRAME OF THE CAR!!
AS IF YOU FOLLOW THE NEG LEAD FROM YOUR BATTERY IT WILL BOLD ONTO THE CHASSIE OF THE VIEHCLE. SO I JUST EARTHED OUT ALL MY AMPS AND SO ON TO THE BODY (MAKING SURE THERE WAS A GOOD CONNECTION)
ALSO MAKE SURE YOUR HEAD DECK IS NOT TOUCHING ANY METAL PARTS IN WHERE YOU MOUNTED IT!!!!! GOOD LUCK....
Posted on Apr 22, 2009
You want your earth to be as short as possible. So find somewhere in your boot or under the seat where you have the amp mounted, you will want to run 4gauge wiring. The positive you want to have a fuse preferable 1m or less from the battery. In my experience it is alot easier to run the amp power line down the underside of the car and into the boot as there is always grommets in the boot floor like for where the fuel tank wires run out from. From my experience it is better to have the negative less than 1m long. you may not be getting the noise through your amp it could be coming from the stereo via someother part in the car. Try a noise supressor available from any auto parts store.
Posted on Jun 27, 2009
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Posted on Jan 02, 2017
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