"If you measure an 8 ohm speaker at 2.83V (or 1 watt) then it takes 2V at 4 ohms or 4V at 16 ohms to reach the same level. In other words, 1W at 4 ohms= 2V, 1W at 8 ohms = 2.83V and 1W at 16 ohms = 4V. The formula is I
(watts) = V^2 (voltage)/R (resistance)."

I hope this helps!


Anthony Lucas
Sr. Lab Technician
Eminence Speaker LLC
502-845-5622 ext. 341