OK this is the deal I have a 300 touring. I am running a pionner 4channel amp for my mids and highs, and a 2 channel punch500 to two 12's punch p2s(8ohm speakers-bridged down to 4ohm). The problem is my punch amp just cuts off. I think its just lack of power going to the amp. Also, after that cuts off, i can hear my mids and highs seem to lower in volume slowly. I would have to raise the volume higher that usual. Dash lights do dim alot. I have 4 gauge cable split to two 8 gauge cables using a distribution block to the amps. What do you experts think I should do? Would getting a farad capacitor do the job with what I have? Or would I have to get an optima battery as my 2nd battery. Or even more costly, will i have to upgrade my alternator and get either or a farad cap or battery. I thought this car would handle this extra stuff better than I experienced, cuz I had bigger systems in my old lil honda civic that handle this needed power better. I searched the audio forum here to decide, but didnt find an answer for my case. If any1 has suggestions, please feel free to help me out.