This calculator requires the use of Javascript enabled and capable browsers. Use this calculator to determine how much power is required for your 70 volt amplified speaker system. To use it, enter the quantity of speakers, the the wattage (power) tap used. The click on Calculate for the required power calculation. Both entries are numeric. You may change either of our default entries. The formula is:
Power Required = (Quantity Of Speakers x Watts) + 20%
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