Get rid of the basstube... buy a capacitor for the amp pushing the sub... get a decent 12" sub in a customade box. Sure got better bass now

Toniseah: this is due to the known by audio ppl the term "Aeroplane sound" or distortion sound. This is a tricky part to tackle, either it is due to any of the following:

a) speakers wiring/ RCA wiring touching car panel or any other wires
b) low quality amps installed
c) power cable from car battery to ampl not properly covered/ protected by heat resist layer.

If the above all done and still has the sound, best to use "surpressor" to cut off those sounds. However, sound quality will reduced.

Hi bro... it seems to me your component amp is the one giving problem. Mind to share what brand is it? Do check the power cable from car battery to the amp. Most likely this is the source of problem.