Engine Noise with 640 watt amp

how do u measure the resistance? I have a multimeter btw. :P

Are you using the ring terminal that came in your amp kit? use those and the self tapping screws that came with it and ground to a new spot, not where another bolt is. See if that helps With a subwoofer Ive never noticed any induced noise in the signal from running the power or ground close with the RCAs does this 'whine' increase when you are driving or using anything else in your electrical system (headlights, wipers etc) try turning your gain way down on your amp and see what happens

had the sam problem in my 96 chevy its was caused but bad RCA wires..........i went and got a new pair of RCA'S and it worked fine soo .....id go get a new pair of RCA's

this is a possibility but just saying to go get a new set isn't really good advice....what if he goes out and spends 50 bucks on a nice patch cable and the noise is still there??? Gotta diagnose the problem before buying stuff

When I reduce the gain to minimum, the whine is very minimal but still there(and i cant here the music!).

Here are some links to the RCA cables I used: 1: Link 1 2: Link 2 3: Link 3 4: Link 4 Please advice me if they r bad quality

so wats the verdict?

Those look like the unshielded cheap radio shack rca's. My suggestion would be to run the rcas on the outside of the vehicle away from power wires to see if your still getting noise. Also test for alternator whine. To do this turn the volume all the way down on your hu and then rev the engine if you hear the whine unplug the rcas repeat the process without the rcas plugged in if the sounds goes away you most likely have a ground loop. also how are you running your rcas and power? On different sides i hope.