I just finished installing my first amped set of components, and i have a few problems. The components are being ran bridged from a 4 channel (channels 1+2 and channels 3+4) The gain is matched to the head unit voltage (2 volts), and the ssf is being used as the hpf for the comps and the switch on the amp is set to "full". The rca's are hooked up as followed: Front left @ hu to ch1 @ amp Front right to ch2 back left to ch3 back right to ch4 I used this same head unit (alpine cda-105) with my "old" system without the components but with a subwoofer. There were no problems with the system then. I am using the same ground in the rear that i have been using for my sub amp. I just used a distro block to run 4 gauge to each amp, with 1/0 going to the grounding location. The main power wire is 1/0 with a distro block going to 4 gauge to each amp. When i first turned the system on i noticed sound was only coming from the left side, plus the sound was horrible, almost like a crackling. I turned the head unit up to volume 8 and it shut off and restarted. When i turned it up to 5 i could see the head unit's illumination dimming with the beat of the music. Any help is appreciated. If i missed any info just ask.