Help with setup receiver/ps3

[Intamin]

Just got in my Marantz s5002, and it's great and all. However, my sub isn't playing when I'm using a cd from my ps3 to it. It works fine for movies, my sub is there, just not on my cd. Any thoughts as to why it isn't outputting anything? Connections are ps3 to player via hdmi. Preouts on receiver to HCA-1000 and Def Tech SuperCube I, with the sub just using a sub cable.