the av reciever is quite old. The dvd palyer has the dolby digital decoder reciever and then thes siganl goes into the av reciever(as does the xbox 360 and cd player). I can't change the level settings on the dvd player input. So i guess what im asking is if the receiver is is out putting the xbox and cd player sound correctly with the sub at the above settings. Is it just right for the sub to sound different(very quiet) on dvds. Or am I right to increase the volume on it so its sounds the same as the cd palyer and the xbxo 360? Bit of strange set up and quetion but just want your ideas. It seems strange the sub sounds different to me!