I have 2 12" Alpine Type-R subs and a 1000x1 HiFonics Brutus amp. The problem is when I turn the volume up over half way the subs seem to make a popping sound and dont really produce any bass at all.
Clipping is basically asking your amp to do more than it's capable of doing, therefore, sending a distorted signal to your subs. The poping noise is deff a bad thing. To correct this, readjust your gain by setting it to the pre-voltage output of your HU and by showing the volume knob some mercy.
been real busy man. Working Constantly, planning wedding, and everything else that needs to be taken care of. Work is slowed down now so I should be around here again Got to try and catch up again, lol