The 'crossover settings' you refer to relate to the tone controls and not to the separation of signals into bass (sub) and main speakers. You need a separate crossover for that.
compatability confusion for newbie, yamaha ca-1010
i am setting up a new system, purchased mint ca-1010, rated at 90 watts into 8 ohms, almost double into four etc. i am looking at powering paradigm titans 8 ohms 80 watts, and a passive svs sub 4 ohms 350 watts with it. it has a coupling switch on the back. on or off. i don't understand ohms. is there a swtch or something that determines what the amp puts out4 or 8 or is it the speakers themsevles that determine what they need and take it? will this setup work?