I find this most interesting since it's the exact purpose of the amplifier to deliver in that range, lol. Is that personal experience or a trend that you've notice in others mentioning in various discussions? I'm wondering if that's not simply a result of people setting maximum output at frequencies in the 40-50 region and not having the amplifier headroom for the demands of any frequency below that. So many variables involved with that aspect of performance.
I plan to annihilate the 12hz to 24hz region and filter around 45hz to hand off to the front stage, so probably no use of SSF. I'm hoping things will just be excursion-limited (four 4 12's moving 3inches on subsonics) with obvious demands for high current delivery from the amplifier, but with enough high voltage delivery as it begins to get into the 30's and 40's. I do this all the time with single driver setups, just looking to scale it up.
Dammit, I was hoping to go the value route with watts. I just want to find something that delivers numbers, doesn't break, and sounds good. So I should probably reset my budget for $300-$400, at least?