OK i got a 1000 watt 4 channel amp for inside speakers and a 4000 watt 2 channel amp for subs.. grounds are good but everytime i turn on the car theres this whining noise that comes from the speakers and it gets a more high pitched sound when i press the gas, i know its coming from the 4000 watt amp because when i take out the fuses from the 4000 amp the noise goes away from the inside speakers.. i bought a ground loop isolator but it didnt do nothing.. could it be a faulty amp... its a lanzar mxa.. or do i need another isolator.. somebody please help
your getting induced noise probably because the speaker wires are too close to the power wires. try moving them to opposite sides of the car. or if you're willing to spend some money then buy wires that prevent induced noise from occurring.
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