logitech states that the power of the z-640s is 70w RMS, with the satellites being 9w/channel RMS and the sub being 25w RMS. the review of this system on tom's site says that it is only 5.5w/channel RMS for satellites and 23.5w RMS for sub.
i am considering upgrading to the z-640s but i was wondering about the large discrepency in the stated wattage ratings. did logitech upgrade the z-640s since the review was posted on January 2003?? or is there something else?