Hey man just got your Email, the Bassman came to me that way so I dont know to much about it. The cab is after market for sure, I may be able to get some measurements if you like, but I think anyone in the custom cab business could be more helpfull. The speaker setup in mine is a one twelve Electro voice something or other I cant recall but it sounds great. I like the setup since its easy to lug around, sounds killer, and will fill most small to medium venues fine. Mine had a few mods done inide as well that make the bass channel more of an overdrive channel so I can to Nugent licks without going over board with the volume. What were you thinking of doing with yours?