Amplifier Load Calculator
A power rating means nothing without the load it was measured into, and a load means nothing until you know how the units are wired. Enter the count, the nominal impedance and the wiring, and this returns the load the amplifier actually sees, the output voltage that rating implies, and the watts each unit ends up taking.
Parallel divides the load, series multiplies it, series-parallel needs an even count of four or more and lands back where you started.
Whole units, 1 to 16. Count voice coils, not enclosures.
The printed figure. Real impedance dips below it near port tuning.
Power, restated at your load
Continuous, per channel. Ignore peak and PMPO figures.
The load that rating was measured into — always printed next to it.
Continuous power handling, not the peak number on the front.
Load the amplifier sees
2 ohms
Safe for any amplifier rated to 2 ohms or lower.
Method: the amplifier’s rated pair fixes an output voltage of V = √(P × Z), and that voltage is applied to the new load — so power scales as V² ÷ Z. Real supplies sag, so treat the total as a ceiling rather than a promise. Equal units share it equally in both wiring schemes. Nominal impedance also names a curve, not a value: a 4-ohm unit can dip under 3 near port tuning and climb past 30 at resonance. Once the load is settled, size the copper with the wire gauge calculator.