Carbon fiber in a wet layup application would be absolutely awful in this type of an application. Now if one had a cabinet design and a mold so that this process could be accomplished using an autoclave, or vacuum forming utilizing a prepreg carbon Kevlar weave in multiple layers, final finishing layer in straight carbon fiber with a 2 stage urethane finish, it would look awesome. Not sure about the sound though.
To @sounds_real_audio point fiberglass would be 1/3 the manufacturing cost. Can be blow-molded or autoclaved.