Saintz

Yes it generally cuts off and goes into protection within a fews seconds on heavy bass. Generally as the car starts to peak on the meter and then just clips. I haven't to date seen it hit full. Plz tell me how to incresase the frequency of the box.

@ Ohjay, What is a group 31 battery? If i use a smaller amplifier and same battery can i achieve the same figure or even higher if i tuned the box to a higher frequency? Higher frequency = Less power draw. I stand to be corrected. i am still trying to learn as much as i can.

I am comsidering putting a 140amp alternator. Using a 8000rms amplifier. Could it be that the box is incorrect? Any ideas when it comes to charging the optima battery?

Is there any way to resolve the problem using the same battery. Does anyone expirience with this battery

My class limits me to the use of one battery only. My alternator charges at 90amps. We got to keep all the equipment standard in the vehicle.

Hi guys, i am fairly new to this so all/any help would be useful. i have a Optima 55 battery and the problem is that everytime i really test my car on Termlab the battery starts to clip/cutoff. The voltage drops from 14.4V to 11.8V. What can be causing this problem. My car runs on the IASCA format and does a 150.5dB in the Rookie Int. Class. the car clips at 150.5. I am really eager to know what this could be. Looking forward to your help guys. Thanks.