I don't know what level of finish you are searching for, but I gotta throw in my two cents on something. I built a pair of X-LS Encores and a 12" powered sub for my son; who has boys 6 & 10 and a girl 14. We play wii, assorted other games, watch football, etc in the living room where the speakers are located (they pull tv, HT & stereo duty), and it gets pretty busy in there so I had to build something people-proof. I used a product called Duratex to finish all three. The finish ends up the same as you would see on stage equipment, and man is it tough. See
www.acrytech.com for a good description. It made a great utility finish, and if it gets damaged, I can just paint more on. I used the sonicaps, mills resistors, and no-rez and I have a fantastic set of speakers; and they are bullet proof. I can hear all of the cabinetmakers throwing rocks at me, but I had to pass that on to you. After all, whats on the inside matters most, eh? good luck