Mac audio Aliante 12 Black Limited

I have a chance to get one of these pretty much new in it's box, looking at the specs you would not think much of this sub but apparently it is one of the best sq subs around, I was going to get an alpine type x 12 or maybe even an Dayton Audio RSS315HO-44 but now the Mac audio has come up and presents a dilemma.

The Mac audio goes low enough, 18hz by all accounts, has quite high sensitivity but the specs say it only has 4mm of xmax.

Anyone ever have or hear one of these subs?

I heard the ten inch version and it was the loudest ten I have ever heard.

Spec sheet below.


Screenshot from 2024-03-14 20-02-55.png


Regards
 
Assuming 'accurate enough' specs, which with its 17.9 Hz Fs, 0.2 Qts makes me skeptical! It's an infra-bass (< 20 Hz) compression horn driver or more likely designed for high power/SQ, small vented or sealed prosound mid-bass/lower mids woofer apps.

For vehicles with high 'room' gain, a sealed box designed to 'mirror' cabin gain could make it literally an infra-bass 'killer' capable of blasting front and/or back windows out as happened with a neighbor's similar Honda system.