HI I'm thinking about upgrading to a surround sound amplifier and have currently wired for a 5.1 set up. The amplifier I'm thinking about buying is a 7.1 Denon. If I connect the 5.1 speakers to this 7.1 amplifier will it decode to just the 5.1 speakers or will I be missing the centre rear and side information? Are there settings that be be selected in amplifiers to compensate for this until I possiby upgrade and add the additional speakers to route the centre rear acorss the rear surrounds for example? Any info greatly recieved.