This will piss a few off. How come when I read posts about my 2-10 or my 2x 1-12s is big enough for a medium sized room, I scratch my head? What are these guys talking about? I was reading a post on Yes, Chris Squire was using 2 x SVTs and A Marshall W/4-12. I know,it is stadium size, but they have state of the art monitoring systems. Why don't they use their combos and micro stacks? When I play out, it is usually less than 100 people & I use a 1000 watt Eden or my vintage SVT with a 4-10 & 2-10 or a 4-10 & 1-18. It is plenty loud, but I won't get caught with anything less. Maybe my idea of big sound is off. Is this issue that subjective?