CHARGING SYSTEM
If your total current draw is over 100 amps (or total output power is over 600 watts), you are probably exceeding the capability of your charging system. Dimming lights and fluctuating voltage are solid indicators that you need to upgrade your alternator, battery, or both. You should also check the condition and current capacity of the stock battery negative cable and connections, and replace or upgrade as necessary. Keep in mind that your amplifiers simply convert electrical energy to acoustical energy, and any electrical deficiency will compromise the performance of your sound system. For more information about charging system upgrades, see you local authorized Precision PowerTM Dealer or call Precision PowerTM Technical Support at
CURRENT DRAW
The following is a basic formula to be used as a guide to determine current draw. Your new amplifier is more efficient than most other amplifiers. This formula is to be used as a guideline. Using wire of a larger gauge can only improve the current transfer of your system. Do NOT use smaller wire gauge.
Total RMS output X 1.5 = Total Input Wattage
Total Input Wattage = Current Draw (in Amps)
Supply Voltage
Example: Your new amplifier has four channels at 250 watts per channel RMS rating into 4 ohms (250X4 = 1000 watts).
You would use the formula in the following way:
1000 W X 1.5 = 1500 watts
1500W = 125 Amps total current draw
12V
If the same amplifier is driven into a 2 ohm stereo or 4 ohm mono
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