[quote name='Prime_BASS' timestamp='1371734981' post='2117508']
That's as in it should get just as loud with 150watts with 600watts, but out experience more is better, giving you more headroom, a safe 250 should see you getting the most out of it.
[/quote]
I don't think this is exactly what this spec means. I'm pretty sure it won't reach its maximum s.p.l. with 150 watts. Best ask Barefaced Alex though....