Ok here it goes. I have a Rockford Fosgate amp with a 10" Memphis M Class. I have the 4 ga power wire running to a distrabution block. It splits out 2 8 ga wires. Well one of the fuses blew on the block. So I went out and bought 2 new fuses. When i went to put the fuse that goes to my Sub amp in it sparked real bad. Well now when I turn the bass on for my sub, it pops on the highs and doesn't hit as hard. I pulled it out and hooked it up to another amp and it doesn't have this problem. But this other amp wasn't as many watts. I also pulled the sub out to check the spyder and other parts to see if their were any tears. None. Can anyone help?