SOrry to sound ignorant but I can't remember. When dealing with ratings for speaker power input: Say we had 150w at 8ohm AND 150w at 4ohm Is there a difference, in other words is one more powerful than the other.
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Nope - 150W is 150W. What IS different is the voltage and current. For an 8ohm load the voltage would be 34.67V and the current would be 4.33A. For a 4ohm load, the voltage would be 24.5V and the current would be 6.12A.