The fuse in my d block for my sub amp was hot as hell, I am using 4 gauge power and ground. Can anyone tell me why it would get so hot? I am using a alphasonik pma4150 on 2 jl 10w7s. I did bridge them on the channels so maybe that was it. I have since wired them back 2 stereo but didn't run it for a long period of time so I don't know if it got hot.