I have a water damaged pair of 4343. I have a carpenter that can build new cabinets. We found that the original cabs are particle board. The carpenter suggested using plywood for new cabs. I told him that Jbl originally used particle board for acoustic properties due to density. He then suggested mdf for new cabs that's close to particle board density. Also he suggested using a thinner piece of mdf for the back side. Would this be suitable for rebuild and be close to original acoustic properties? I've found that carpenters like to use their opinions on how to build a new project better than original instead of trying to make an exact duplicate.