Hey all. A friend of mine is offering me his Polk R40 floorstanders. They are kinda old...but they are in like-new condition. I currently have a 3.1 setup with tsi100 fronts,cs10 center and psw110 sub. I was wondering should I take them and use my tsi100 as rears and use the R40s as fronts. I know they are not similar model series and they are older,but I'm running them off a denon avr 1613 with audyssey auto-cal. Would the auto-cal copensate for that? Thoughts?