I keep jumping back and forth on either making my own bookshelf speakers or just buying them. The tinkerer in me just won't let me go and buy a pre-made set. On a few of the DIY sites I found, some said that you need to choose speakers for your project that complement each other and that you can't just go and arbitrarily pick out a woof and tweet. I notice some sites use a Dayton woofer with a Dayton tweeter and others prefer a Morel Woofer with a Vifa tweeter. Of course then you have the crossover. So my question is: What makes one choose a particular woofer and tweeter pair when doing a DIY project? Would it be the parameters in particular the frequency range (i.e. - woof = 50 - 3500 and tweet = 3500 - 20k)? Is it that they come from the same manufacturer? Or is it none of this and it's the crossover that makes all the difference? By the way, this is for a stereo bedroom system. Wanting to use 5.25" woofs to limit exterior width to 7.5". And trying to get as much bass as possible. Won't be using subwoofer.