I would like to build some bookshelf speakers or maybe floorstanding speakers. I know that my receiver puts out 85 watts at 8ohms. Well one midrange is 8 ohms, and one tweeter is 8 ohms. So I can wire them to get either 4 ohms or 16 ohms right? So how can I get my bookshelf speakers to have the correct ohms? (8ohms)? Imagine if I wanted two midrange and one tweeter (all 8 ohms).. how would I get 8 ohms out of that? Any help is appreciated... thanks!