Ok here we go.
1. I assume your step one was this. Speaker wire from amp to crossover DISCONNECTED. Crossover to Speakers CONNECTED. When the box is outside the car, no whine, when its in, you get whine. If this is the case, try an experiment, and wrap everything in foil and see if you still get whine when its in the well.
2. Your 2. I assume you had the crossover CONNECTED to the speakers, where it was placed outside the car. (no whine). You then attached the speaker wire of the crossover to the amp and you got whine.
If I am correct on both those statements and understood your post correctly, then you have some SERIOUS EMF going on. I would try this next.
1. When you did step 1. in your post (if its what I assumed it was). Was the amplifier itself on? If it was, I want you to try step 1. again with all power wires disconnected from your amps so there is no possible way they can turn on.
If you still get whine, then we know the crossover itself is picking it up. If you do NOT get whine now no matter where the crossover is with the amps off, then its the amps emmitting the EMF.
Lets say you do still get whine, You will have to figure out a way to sheild the Power wires running through the car, if you can even get to them. Check all your grounds in the car too, make sure they are all clean connections everywhere and the wire is in good condition.
Besides that I wouldn't really know what else to tell you beside relocating your install, which is not going to be the easiest thing to do.
If you don't get whine at this point, (Amps off/disconnected totally, and crossover in the car), then I would recommend you check all power connections to your amps. And hook one up at a time with that crossover over there, and see if you get whine. If say you disconnect one amp, where another is connected and you don't get whine, then you will narrow down which amplifier is the source of noise. If its all the amplifiers creating noise, and all your connections are good. You may want to try relocating your amplifiers, or sheild all wires going to the amp, or buy some sort of power line filter. Maybe you are picking up noise somewhere else on the positive in your car, and its causing interference in the amps.
Finally, this didn't happen before with the stock system, 1, cause the power levels were much lower, so noise didn't amplify as much, 2, the amp was located in the front of the car probably and was far enough away from the main power source of the battery where it didn't pick up EMF.
If you try all this and still no luck, I would consult a professional installer. Tell him everything you did and maybe he has some tips and tricks to fix it. Crappy situation though. Let me know how it goes..
1. I assume your step one was this. Speaker wire from amp to crossover DISCONNECTED. Crossover to Speakers CONNECTED. When the box is outside the car, no whine, when its in, you get whine. If this is the case, try an experiment, and wrap everything in foil and see if you still get whine when its in the well.
2. Your 2. I assume you had the crossover CONNECTED to the speakers, where it was placed outside the car. (no whine). You then attached the speaker wire of the crossover to the amp and you got whine.
If I am correct on both those statements and understood your post correctly, then you have some SERIOUS EMF going on. I would try this next.
1. When you did step 1. in your post (if its what I assumed it was). Was the amplifier itself on? If it was, I want you to try step 1. again with all power wires disconnected from your amps so there is no possible way they can turn on.
If you still get whine, then we know the crossover itself is picking it up. If you do NOT get whine now no matter where the crossover is with the amps off, then its the amps emmitting the EMF.
Lets say you do still get whine, You will have to figure out a way to sheild the Power wires running through the car, if you can even get to them. Check all your grounds in the car too, make sure they are all clean connections everywhere and the wire is in good condition.
Besides that I wouldn't really know what else to tell you beside relocating your install, which is not going to be the easiest thing to do.
If you don't get whine at this point, (Amps off/disconnected totally, and crossover in the car), then I would recommend you check all power connections to your amps. And hook one up at a time with that crossover over there, and see if you get whine. If say you disconnect one amp, where another is connected and you don't get whine, then you will narrow down which amplifier is the source of noise. If its all the amplifiers creating noise, and all your connections are good. You may want to try relocating your amplifiers, or sheild all wires going to the amp, or buy some sort of power line filter. Maybe you are picking up noise somewhere else on the positive in your car, and its causing interference in the amps.
Finally, this didn't happen before with the stock system, 1, cause the power levels were much lower, so noise didn't amplify as much, 2, the amp was located in the front of the car probably and was far enough away from the main power source of the battery where it didn't pick up EMF.
If you try all this and still no luck, I would consult a professional installer. Tell him everything you did and maybe he has some tips and tricks to fix it. Crappy situation though. Let me know how it goes..