Originally Posted by Scott Simonian
Got 14 18's myself, six of which will be nearfield.
Make sure you have them at head-height and facing forward and as close as absolutely possible, instead of on the ground etc; you'll gain 20db; which is the equivalent of buying an amplifier that is 100x bigger. LOL
One skull-subwoofer per seat\guest.
Putting the sub anywhere else is a huge waste of money and time/effort by comparison. (But don't take my word for it, anyone who tries it will see first hand.)
I could literally limit the power to 1000watts to that drivers and apply a crazy ULF-tard house curve to it to counter-react the nearfield response, which would turn it into basically a ported-sub of sorts; but with extreme efficiency, output and cone control.
How deep I could make it go and how many db's I'd lose above 40hz I'm not sure; that's the trade-off though.
I think I might be able to force it down to 17-20hz because the 21 has a lot of excursion and displacement, which is the main limiting factor at those frequencies. Sheer brute-force might just work. I'll have to give it a try tomorrow.
Whatever the SPL I will get above 40hz, would probably STILL be too crazy to withstand, so it's like: "who cares what it is, it's too-much is what it is". We aren't looking to burp +180db here, we are here to listen to music and movies instead. LOL!