When I use 2 split stacks I always have a gap at least as wide as one cab width if I can, but sharing stages and cabs etc, you do the best you can at the time (in what little time you have to setup
). I also like to use milk crates to get the off the stage/floor, this also aims the top speakers more at my ears, so I don't play too loud
(a trait of mine apparently LoL) or too toppy. These days I've been using the spare split stack which is wired stereo, so just one cab on a milk crate. It gets a bit flangy as there's no separation between the speakers as they are in the same cab.
@Dante, well all monitor wedges are not made equal LoL, and no doubt the singer gets the good ones. It also could have been either no eq or bad eq settings on that monitor send, and what amp was being used ? or was it a powered box ? The MP2 room eq knob helps for these situations, eg full counter clock (bassy) may have saved the day ?