i got a 12 " kicker L7 in a ported box. i used to have a crossfire amp pushin it but i blew the amp. i need a new amp, is hifonics a good brand to go wit? or atleast a decent one? will i be dissapointed? and also, the sub is dual 4 ohm and i had it wired at 2 ohms, can i do 1 ohm wit a dual 4? and how do i do it?