I don't own either the same player or receiver as you, but my guess would be that you need to enter the bass management setup on your player and set all of your channel levels, including the sub.

Unless you are connected via I-link or Denon-link, and you're not, then your DVD player handles all channel level & bass mgmt. settings.

Pioneer VSX1014-TX HK DVD31 M22ti mains VP100 center M2i surrounds SVS PB10-ISD