Well the deal is that a 4x12 sounds like a 4x12 because of the internal interaction and acoustic coupling of the speakers. A 4x12 sounds different than a 2x12 or a 1x12. Not to say that you can't get a great tone with a different speaker cab but 4x12's have a certain sound even if you are just micing one speaker. If you aren't really good at furniture carpentry then I'd suggest you buy a cab instead . Getting all the panels to line up like they do from the factory isn't easy unless you build a large jig to aline them.