George: I had mentioned the same point in another post about the CM-30.
http://www.synthzone.com/ubbs/Forum37/HTML/016357-2.html

Peavey used to play the extact same game (listing power ratings at 2 OHM instead of 8). Looking at the SRM150 specs they list the amp at 100 watts continuous, 150 peak. The speaker is listed at 8 ohms but they don't say they are driving it at 8, they could be driving it at 2. Hearing both the Roland and the Mackie I agree that the 37 watt at 8 ohms is probably more on target. I also have an older TOA that is 25 watts. The Mackie is louder but not 4X more.

It's a shame that Mackie thinks it gives them an advantage in the market place by playing games with specs.