Hifonics ZRX2000.4 Car Amplifier

Perfect for my setup, accepts 4 gauge ground and positive, sounds terrific i have it powering 6, 6.5inch speakers and it sounds great.. low pass and high pass filter works well also. does not get hot although i do have a cooling system. fans. and for...

i get serious ground loop hum and alternator noise.. it give me a head ache.. i tried everything to get rid of it but to no val. i got some nice ground loop isolators and it fixed the problem. also make sure do give this amp enough power.. or i will...