#1
has anyone ever seen a stack and a half. im not talking about a wall of cabs but a full stack with a 3rd cab.
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#2
It would make it very difficult to match impedances, not to mention transport, but there's no reason it can't be done.
#3
I have seen it done with W/D/W rigs, but not really 3 for one amp.
I've bought, sold, and traded more gear than I care to admit.