Pioneer DV-45A - Where's the bass?

I just got a DV-45A for SACD and DVD-Audio. I went into the initial setup menu and set all of my speakers to small with the subwoofer on. The problem that I am having is that the subwoofer level is really low. I had to turn the gain way up on the subwoofer, set the DVD player subwoofer level to +6db (the max) with all of the other speaker levels at -4db, and set the subwoofer level on the receiver to -20db to get the levels to match for the 6-channel input and the regular digital input. I used test signals from the DVD player and from the reciever and from the AVIA Guide to Home Theater disc with a Radio Shack sound level meter to set the levels. Has anyone else found similar problems with this player or am I missing something in the setup or is it just a faulty unit? I assume that by setting the speakers to small, the DV-45A should redirect the bass to the subwoofer output. Am I wrong about this? Any help would be appreciated.
Thanks,
Joel