I recently downloaded a beautiful organ music album.  "Whitlock: Organ Sonata", Base2 Music - Base2-09.  Original Recording Format PCM 24/384 kHz but I downloaded the DSD 256 version.  I own the X3s.  I can not play the album, the X3s simply cannot handle the low bass notes (reaching down to 16 Hz).  I have two other subwoofers, SVS SB13 Ultras, but they won't play that low either.
How do folks deal with this?
Marcus