[quote name='Bill Fitzmaurice' timestamp='1467114691' post='3081252']
Watts don't matter. You don't measure sound levels in watts, you measure it in decibels, and there's no direct correlation between the two. If there was a Vox AC30 wouldn't make your ears bleed from fifty feet away, nor would anyone be able to gig with an Ampeg B15.
The simple fact of the matter is if you can't get the volume you want with one cab you need two cabs.
[/quote]
I'm having trouble getting my head around this unless it needs qualifying. I know it is a pointless exercise comparing different manufacturers wattage outputs - I use a Trace Elliot 300W head that is louder than the Mark Bass Little Mark Tube 800 it replaced, for example. But for the sake of discussion, surely a GenzBenz 900W amp is going to be louder than a GenzBenz 600W amp through a single cab? Or, as in the OP, the MB 300W head through a 300W power amp and into the one Supercompact?