Another note on the crossover adjust-when experimenting-try to set the sub crossover and level where it is "seamless" in going from the main speakers (La Scala)to the sub.You shouldn't notice a transition-just the lower bass output from your sub.It may take some experimentation and "trial and error" to get this.Then you will have a super sounding system.-You then may want to listen to movie soundtracks thru it as well as music!!