Still does it on the iphone, though it was still slightly louder. Excursion only get to about 3/8" - 1/2" before it starts. Could it be something to do with current draw? But my voltage doesn't drop down?
Also what will happen if you don't back down on the knob/volume is that the amp will go into protection mode or something and the subs will make this slow rhythmic chirping sound. But when this happens the protection light doesn't come on, but the power light dims and brightens with the same rhythm.
What is going on? Does this sound familiar to anyone?