At the risk of sounding overly ignorant.. Can someone point out the method of determining X Watts at Y ohms? Eg. If an amp is rated at 100Watts RMS at 2 Ohms, What is the same amp rated at 4 Ohms?
the amp will be at 50 watts rms. the lower the ohms the less resistance which equals more power. thar amp at 1 ohm would have 200 watts going through it. at 3 ohms it would be 75 watts. 4ohms is half of 2 and 2 is half of 1.
theoretically, not accounting for efficiency and losses to heat and such, half the resistance would be twice the power output.
8 ohms = 50 watts 4 ohms = 100 watts 2 ohms = 200 watts 1 ohm = 400 watts you get the idea.
in reality, half the load never quite makes twice the power, because you always lose a bit of power to heat and efficiency depending on the amp. some lose more than others.