i have two 12" 600w (1200w) subs in my trunk...and ytd i have blown all the channels on my 5 amps...and two of them ive repaired and done it again.... i have a boss 1000w 2 channel...a boss 800w 2 channel a pyramid 800w 4 channel. optimus 260w 4 channel....what ami doing wrong why do they keep blowing (the channels)?the speakers are not bridged...i dont know