Impedance/Resistance Calculations  
This portion of this site is intended to help you calculate impedance/resistance levels. You can calculate any unknown value if you know the other two in the equation.  
Explanation of Terms  
E  stands for voltage, the unit is the Volt.  
I  stands for current, the unit is the Amp.  
P  stands for power, the unit is the Watt.  
R  stands for resistance/impedance, the unit is the Ohm.  
The Formulas  

Current Home Loudspeakers 101 Power Voltage EMail