Is there any disadvantages to adjustable cabs that can be converted to open or closed? A part of me wonders why all builders don't make them this way for the same reason that there are dials on the front of the amp. Some people mod them this way, and some builders will make them but overall they are quite rare. I've never played through one, so calling out anyone who has. Is it just the extra labour or are there tonal disadvantages to having it adjustable? A fully closed back as one piece of wood vs a closed back that consists of 3 seperate panels? If there is extra bracing used, to the areas where the panels meet, does this cancel out any differences? Not sure whether to post this in tech discussion or here.