Well I feel rather stupid. I decided it was time for a new amp and went to Music City in Springfield. Couldn't afford a half stack or whatever, so I played around with a few combos and decided I loved the tone of the Fender Bassman 100. It also SEEMED sufficiently loud when I was playing by myself in the store. I go to rehearsal with my new toy and find it is not nearly as loud as I had thought when I am playing with a volume-happy guitarist and a bangin' drummer. I don't really want to sell the amp or anything because I love the tone, but I was wondering if it wold be possible for me to use a Bassman 115H cab as an extension cab. Would my Bassman 100 be able to handle it and would it make that much difference? Thanks in advance.