Hi all. I have a setup that consists of two Alto Black 12" 2400W peak powered mains and a couple of old peavey black widow 18" subs in 2'x2'x2' enclosures that have 2 3" round cutouts each (no port tube), powered by a Behringer NU3000DSP sub. I connect them both in parallel in bridge mode, delivering 3000W at 4 ohms. I usually leave the amp at around 3/4 total gain (or just at where the clipping LED doesn't turn on at all), since I think these are 1400W peak subs (can't find the specs for sure, since they are older black widows).
I use my system for bands and for recorded music/DJs too. Some instruments like 5 string bass and Tuba (common to use where I live) go down to 31Hz, sometimes 29Hz. So it'd be great to be able to reproduce those frequencies and to also get some nice thump in the chest from the subs.
The Alto Black 12 have a crossover set at 80Hz.
I don't know if I'm asking too much out of these drivers or if I just have very inefficient cabs. I was thinking about going for folded horn cabs, but, in all the reading I've done online, they say bass reflex cabs are what everyone's using now. So I'm asking for any thoughts and suggestions on how to get the best from what I already have. Or maybe I should just sell them and buy something else? Thanks in advance for your help. If you need to know anything else about my setup to make a suggestion just let me know.