Noise through speakers

[Cowboyup]

Please help with any suggestions. I am so frustrated that I cannot get my stereo in my boat to work right. I have everything hooked up properly and I have massive amounts of noise through the speakers while the boat is on or when the blower is just running. I have two 12" subs, two amps, and two tower bazooka speakers. The noise is coming out of the bazooka speakers only. The amp that is powering them is a 1000 watt. I only have the gain up about half way...any less and I cant heat them while riding. I thnk the noise has something to do with the ground in the system. Where does everybody wire their grounds to in their boats?

[dba4life]

RE: Noise through speakers

Back to the battery.

[ckligor]

RE: Noise through speakers

It si ground loop noise. Sounds like a whine? The best way of fixing that Is a shorter Neg (ground) cable. The best way is to run as short of a clable as possible, if this is not an option then use 0-4 gauge wire. They also make a device called a ground loop isolater (sp?) you can get them at radio shack or any audio place

[Mikeski]

RE: Noise through speakers

All components in your audio system should be grounded back to the same point, either the engine block or the negative battery terminal.

[1999Sport]

RE: Noise through speakers

This may help you, this may not, but I had a very similar problem with my system..bought a ground loop isolator, and once the boat was on....the blower was on...a ballast tank pump was on....the noise out of the speakers was unbearable. If the amps are wired off of your RCAs from you deck, switch the sub RCAs to a different RCA output. For over a year I tried everything on my system, and then finally traced the problem back to a bad RCA on the deck.

[awake4air]

RE: Noise through speakers

Also try moving the ground. If you have it wired to the battery, switch it to the block, or vice versa.