Midtops question

Hi!!!! For midtops, do you need a specific box shape or can you just make a cube and put the drivers in the front? Basically I want to build a midtop to sit on top of a 15” scoop but I don’t know if I can just make a wooden box and put a 10” driver and a 1” tweeter with an exponential horn? Forgive my ignorance 😆