Electric noise

I’ve have the entire audio system upgraded with the exception of the head unit. Have an Infinity amp for my door speakers working with Audio Controller LC6i. For some reason at lower volumes I hear this hum/electric noise that only come out the driver side door. Now if I raise the volume up to 30 it’s starts working the way it should. I checked and verified to connections from the amp to the audio controller. Tonight driving home I accidentally kicked the kick panel and I could here where it would kick in every time I hit the kick panel. Is there some sort of factory crossover or factory amp behind the driver side kick panel. Thinking there’s a crappy connection when they ran the inputs to the LC6.

 

Guessing there's a speaker cable getting interference from a power cable somewhere in the system.