Hey all, I am hoping to make a system that can play multiple, varying sized speakers. I want to frankenstein this with speakers I can find around my house. I have a bunch of old computer speakers and even a few subwoofers which I would like to utilize (if possible). I am assuming that I need to make a highpass and lowpass filter (highpass to the smaller speakers, lowpass to the largers). I want it to run on, I suppose, two 9-volt batteries. Just looking for some direction from you guys: steps needed to start my design. How I can properly power the multiple varying sized speakers? I do have a Digital Circuits book with Class-A and Class-B amplifier tutorials in it (but I never asked my teacher for guidance with this sort of thing). I am hoping to build this on a board and epoxy it solid. What things should I be aware of? Please point me in the right direction! Thanks all.