Buzzing through subwoofers

gixxer · November 2, 2004

I have a JL 1000/1 amp feeding a 12w7 in a ported enclosure in my truck that really hits hard. My problem is that every time my aux electric fans turn on I get a buzzing through the subwoofer.Is there anything I can do or install to filter this out. They both get their power sources directly from the battery terminal(optima deep cycle top terminals) Any help??

Rookie · November 2, 2004

It sounds to me like a grounding issue. Any time you get a buzz its from the ground. i would check it out again and see if it takes care of it. I also know MSD sells a power filter to stop the noise when using there ignition systems i have heard of people using it in audio applications to stop the noise. I know Summit Racing sells them. It might be worth a try.

gixxer · November 2, 2004

as a side note, it also makes the woofer move whenever I toggle a window switch

Mark_in_Tulsa · November 3, 2004

Its definitly a Ground issue. Do you know what gauge wire you are useing for power and ground? And what are you useing for a ground?

gixxer · November 3, 2004

Im using a 2 gauge that runs straight to the battery terminal with a 150 amp breaher.. For ground im using a 2 gauge also and grounded it to the rear seat belt bolts.

Rookie · November 3, 2004

Try running the ground wire directly to the battery and see if it's gone. This will tell you if its a ground. It may also be the ground on the radio. Remember that the Amp will do it job and increase and noise good or bad in the system.

SlamminL5s · November 4, 2004

hmm sounds like a headunit ground problem.... or the speaker wire is messed up... i had the probelm when i had my 2 L7 15's when i had my 1000/1 jl amp i had to open it up and resoder the ground inside because it was cracked off the terminal.. that would be the first think to check for... are you running a capasitor ?

gixxer · November 4, 2004

no im not but I was considering one, any recommendations?

maroonsilverado · November 8, 2004

no im not but I was considering one, any recommendations?

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i've got a recommendation. make that the last thing you add to the charging system. spend your money on a bigger altenator/battery then worry about adding a capacitor. they're really more a band-aide for your system than they are a help. if you have slight dimming problems from a 350 watt amp......it might be sufficient, but 1000 watts. i would go a different approach first. that capacitor isn't going to help all that much.

but if you really want to buy one i've had good luck from stinger. i've got a 1 farad digital readout i've had for about 6 years now and it's still working......i guess. i really use it more for looks than anything at the moment.

gixxer · November 8, 2004

I have a 200 amp altenator(Summit) and a Optima Yellow Top battery so far, but I was considering doing a 2nd battery instead of the isolator. Does anyone have the parts list so I can use GM parts for it??