I listened to this well coupled with s12 of the Hortus in t I can also tell you that it beats down box.

Low momentum is a double 38 which descends very low, but not necessarily a hit from 50hz, the 38 is the b & c 4 inches, are inclined at 90 degés backwards.

It is compact and very well finished.

Recommend if you want a powerful, compact subwoofer