I imagine I could bathe a small bar in bass with 175 Watts and a single 12 or 15 inch cab with a sensitivity of 96dB or better. Two of them, plus the extra power at 4 Ohms, would probably cover a good sized club or ballroom without PA support, or cover a moderate size outdoor stage for monitoring.26548055[/URL], member: 68399"]With reasonable expectations and a larger cabinet, it should be fine. We tested it with all of the Subway cabinets, and it was surprisingly big sounding with the 115, 210 and especially the 215, 212 and 410.
Obviously that’s not true for everyone. The more low end you push, the more likely a bigger amp matters, regardless of cabinet sensitivity. Even then, I suspect 350 Watts would still handle most indoor gigs.
If you think in terms of available power, after accounting for headroom, the difference between 350W and 800W don’t seem quite as impressive anyway. If you cut those numbers in half, for 3dB of headroom, it’s 175W vs 400W. It’s still a significant difference, but it’s not 450W different.
Given the sensitivity of Subway cabs, and many other brands actually, it seems to me that if I needed much more from them than a 350W amp could deliver, I’d be more concerned about whether I needed the capability to add 1 or 2 more cabs. At that point it only makes sense to move up to 800W anyway.
In fact, the more I think about it, the less sense 2 Ohm or 2.67 Ohm operation makes unless you’re using cabs with fairly limited power handling. Since 350W is probably the sweet spot for 3-4 of my 210AVs, I just happen to be one of those outliers. OTOH Mesa doesn’t make cabs like that. Considering the performance you can get at 350W from your existing cabs, there really doesn’t seem to be a compelling reason to start now.