Built guitar cab with just maple plywood, tons of glue and epoxy. Sides are just one piece of wood that is bent. 10” 25 watt Jensen. Can be open or closed back. :
DIY 1x12 guitar cabinet with Fender speaker and older Gibson combo 4 ohm | Reverb
Building a 1x12 Guitar Speaker Cabinet - ToddFredrich.com
Build a Ported Guitar Cabinet : 11 Steps - Instructables