Thread: Help. Getting strange noise in my speakers

Hello Everyone. I don't post here that much, but I really need some help on this one. First of all, let me explain my setup.

Audio
Kicker 1000.1 Amplifer
Kicker 350.4 Amplifer

Alpine Type-R 5.25 (front w/ tweeters)
Alpine Type-R 10" Subwoofers ( x2 )

Wiring
1/0 GA Wire from Battery to Fuse
1/0 GA Wire from Fuse to Capacitor
1/0 GA Wire from Capacitor to 1/0 GA Distrubtion Block
1/0 GA Wire from Distro to Kicker 1000.1
1/0 GA Wire from Distro to 1/0 --> 4 GA Distro Block
4 GA Wire from Distro to 4 --> 8 GA Distro Block
8 GA Wire from Distro to 700W Black & Decker Power Inverter
8 GA Wire from Distro to Kicker 350.4 Amplifer

( Similar Wiring runs for my ground wires )

Input Device / Display Device
Liliput 629 GL 7" Touch Screen

Power Supply
Black & Decker 700W Power Inverter ( located in the trunk )

Audio / Media Centre
Dell Studio 17 Laptop ( also located in the trunk )


Other Information
I am running an extension Cord from the front of the car, into the trunk. This is solely being used ( right now ) to power the Liliput screen.


Now I will explain my problem. Whenever I plug in the AC adapter to the Power Inverter I get some strange humming noises coming from the AC Adapter brick. Not quite sure I know what it's from, but I ignore it for now.

Now, when I plug the AC Adapter ( which is connected to the inverter ) into the Laptop, I get this pretty loud hissing noise coming from all my speakers. Initially I thought it was the alternator whine, but as I press on the gas pedal, the sound level doesnt change. So, at least I know it's got the annoying Alternator Whine.

But, this is where it gets strange, as soon as audio is played from my laptop the bussing/hissing noise becomes a lot quieter. Initially I thought it completely disappeared, but to my dismay whenever I turn down my volume I can still hear it. Granted it's not as loud ( and annoying ) as it was when no audio plays, it's still annoying as hell.

So, I went around and assumed that the weird noise I heard coming from the AC adapter brick is the noise i'm hearing, so I unplugged the adapter from the inverter. And Volia! The noise completely disapeard, reguardless if music/audio was playing. Now, I think I have a solution, but don't know where to get them. I believe that the RCA cables that I'm using ( Monster Brand ) are the ones picking up the noise from the adapter. So I went out and bought Stinger RCA Cables, with what they said was Stage 3 Noise Resistance. Unfortunately, there was no change in the level of noise going through the speakers.

Now granted, if I'm out for a short drive, then I'll leave the brick at home and run off the battery, but I often go out for cruises with friends and the GF, so I need the stupid brick.

So, my real question is, what should I do to remedy this?

1) Should I find more expensive, better shielded RCA Cables?

2) Should I move the laptop into the Glove Box of my car ( and supply proper ventalation ), and then plug it into the Exension Cord already in place in hopes of seperating the AC Brick from the contacts on the RCA Cables ( and the amplier itself )? EDIT: I just went out and tested this theory. Unfortunately, I still get the same noise, which I now know for certain is the same noise that I hear in the AC Adapter brick.

3) Any other solution?