If you were to build an open baffle that would house a big bass driver as well as the mid and tweet, what would you make it from?\r\n\r\nI've thought about a few things - Thick MDF is easy to work and easy to finish but not the least resonant at low frequencies. Concrete board is heavy and stiff but near impossible to get a good finish on. A layer of phenol board between two of MDF would give a good surface to finish as well as super strength, but phenol is damn difficult to work as it blunts tools super quickly. Perhaps the same idea but with chipboard in the middle, as it is stiff and less resonant than MDF. Again difficult to finish the end grain though.\r\n\r\nAny good ideas?