gonk I have a yamaha rxv 2500 and a denon 2910 universal player so I would use the icbm between the denon and the yamaha, now will this just affect the sacd's or both movies and sacd's. I also have the sms-1{again thanks for the help},so the way I have it now is the crossover set to 60 and all speakers set to small in the receiver I have klipsch rf35 towers in front which are good to 37hz, rc35 center good to 55 hz and rs35 surrounds good to 80 hz would the icbm benefit me.