Yes that’s what we did the heads, but I gave you the sites in case you want to build a cab to go with it from the old speaker too. It also has some tips on the types of wood and construction of cabinets, that applies to building head enclosures. Basically the material you should use should be as hard and dense and thick as possible. They suggest MDF but the wood you are using is better. It also gives some distances from the edges to place screws even tho you aren’t using that type of joinery. Overall I have built over 50 PA sets of cabinets for various musicians and bands since I was about 15 years old and wish I had these site tools available at the time. You are going to use the finish on the wood without a skin of any type so you will be loosing some strength that vinyl and glue with metal edges would normally add.
CHRIS, Charlottetown PEI Canada. Anytime you can repurpose, reuse, or recycle, everyone wins!