Hey guys. I'm feeling a little bored. So I decided to stir the pot a little bit. So I'm starting a thread with questions about stuff that people on here will say " It's bad to do _____________." or "It's pretty much necessary to _________________." and asking them "Why do those things? For example: The one I'll put in is that nowadays it seems that the accepted wisdom is that if using a multiple cab rig, you should use all the same type of speakers or it is somehow bad. But forever, back in the day, a REAL bass big show rig would generally be a high powered amp into a 4x10 and a 1x15. And my longest term rig was a 360W head, into a 400W powered 2x10 cab and an un-powered 2x15 cab. Even now. The rig I'm contemplating moving on from is 2x10 + tweeter over 1x15,1x10, + tweeter. So how come when I mentioned that the combination I was considering recreating was a 1x15 cab and a 1x12 cab, several people chimed in with "That's a bad idea. You should use two 1x12 cabs, or two 1x15 cabs. But not mix them. That's awful." Why is it awful. I've done it for thirty three years and never thought it was awful back then. Aaaaaaaaaaaaaaaaaaaaand GO! edit: Also, add your own things you may have wondered about.