I have 2 12'' L7's and a 1500 RMS Soundstream mono amp. My capacitor reads a voltage of 13.4-13.6v when my bass is low. When I put my bass up, I saw the voltage drop to around 10.6 volts. I have HID lights and my left light has already given out on me for a few minutes and constantly dims hard and blinks. Is it time for me to get a deep cycle battery? Also, I saw that the yellow tops are only 12volts, which is less than my 14 volt battery... wouldnt this prevent my amp from putting out more power if the deep cycle is only 12 volts? What should i do?