I have recently changed from a Trace 1153 to a Mesa Boogie 1x15 (Diesel I think), and I am finding that I have to turn my amp up a lot further to get a usable volume. Does anyone know if Boogie cabs are significantly less efficient than Trace Elliot. The Trace was rated at 200W Max and the Boogie is 500W. Is lower efficiency a penalty of higher power handling or are the two things unconnected? Unfortunately I have changed bands at the same time so possibly the guitarists are playing louder. Any advice appreciated.