Popping Noise in Subs...

i am not sure if its what i am thinking but if its like a rumbling sound check the rca jacks coming from the head unit they might be coming in contact with something.shata21

 if the noise you hear is a rumbling noise then check the rca conections at the head unit they are rubbing on somethingshata21

"Basically, it meets up with the rca's and the remote wire near where the passenger door hinges, and then all of the wires are together underneath the rocker trim panel" Move the power wire to the drivers side. You want as much distance as possible between power wires and signal wires. If they have to cross each other, then cross them at right angles (90 degrees). Running Power and Signal wires parallel to each other in close proximity will deffinately cause interference.Squirrel

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I have common across the problem you are describing several times, and every time it was bad capacitors in the amplifier. When caps go bad, they sometimes "leak" current into the output ICs, causing a random thump if the problem is in a sub amp. (high pass amps with this problem tend to pop and crackle through the speaks because of the filtering taking place in the passive networks between the amp and the speaks) Test: swap the amp with a known good one, and see if the problem ceases.