I have a skar evl 12 being powered by an rp.1200 with a boss audio receiver. I’ve had problems with it clipping around 42 volume for a while now, but when I play a sine wave at 40hz it plays perfectly fine and I can turn it all the way to 50. Seems like it only clips when there is a rapid beat or it hits the lows too “hard”. My dad has an evl 12 powered by a fosgate 1200 and a power acoustic headunit. my subwoofer plays perfectly fine, and sounds just like his when in his truck. But the second it’s back in my truck it starts to make weird sounds. Could my headunit be sending dirty signals? Or is it a wiring problem?