Sat, I pretty much agree with Jeff's replies to you. If your Rotel allows you to bypass the receiver crossover(I'm not familiar with its bass management options)then yes, a full-range signal would be sent to both the sub and speakers and you'd have to use the sub cross to just reinforce the lowest octave or so. Again, both theory and personal experience tells me that if you have a good sub(and you do)let it have primary responsibility for what it does best(even when the mains have pretty good bass).Take part of the burden off of the speakers and the receiver amp sections driving them by setting everything "small".
