hi, I'm a relative newbie so I hope you'll bar with my lack of technical knowledge. At the moment I have a Pro-logic hi-fi system which is fairly similar to this one here. I'd like to get a reciever to upgrade to 5.1 and DTS. I have my eye on a Yamaha system I have seen, with a power rating of 110wpc. (on the specs it lists my current system as having "Total power output 120 watt RMS." My question is this: can I keep my current speakers and simply buy the reciever, or are the speakers too low-powered and might blow up or something? Are the speakers the limiting factor or is it the system itself? Thanks in advance, - Dave.