DBA has been around a LONG time. We just didn't have cool running high horsepower class d amps. I had 4 bass bins and two Horn bins in the early 70s, All the boxes were ran on 30-40 watts amps, Macs..
Used them at school dances from time to time..2 MC240 and a pair of 30
220-240 watts. The place was rockin... oh yea..
The last 10 years, BASS amps have really became reasonable, with ALL the DSP goodies.
4 12K Behringers NEW, and a 2496, will do two square blocks of BOOB BOOB under 2500.00 that's a lot of watts, and a lot of control.
8 3000s,16 1500 watters, PA, or HiFi. !40-50 DB....
You could double it again 32, 15" 1000 watt drivers..
Lets talk low dollar low distortion, cool running.. BASS...
Gatling gun BASS... Yup that's what I call it...Old hat...Old news
BUT Columns.... that's something the Greek, and Roman could agree on.
I guess Irish too (ME)... I'm gonna contact the guy, on baffles and who make the darn drivers... I bet I won't be surprised. Good wire inside goes a long ways too...I wonder what is being used?
Regards