We have a PA consisting of a Behringer Wing mixer (too complicated for me to use. I like old fashioned knobs!), Mackie SRM 450 tops and SWA1501 bottoms. 
 
	One 1501 is ours, the other is "borrowed". We've been looking for a second 1501 for us, but I see on-line that they can have expensive reliability problems.
 
	 
 
	If we bought another manufacturer's bass bin and use both together, would it / could it cause  problems? At least then, if the Mackie died we would still have the other.