ok, i am sorry if this has been asked before, but i am curious... all other things being the same, if you have two 4x10 cabs on top of one another...is the sound different than to have one 8x10 cab? for example is an ampeg fridge different sounding than 2 ampeg 4x10's? or the new fender (with, say, a super bassman 300).... does the 8x10 sound different than having 2 4x10's? i ask because i was reading a thread recently where some people were saying that to really get the ampeg sound good & proper, you need a fridge...ok, well enough. but i wondered if 2 4x10's would do the same thing. any thoughts at all welcome.