I just bought an Acoustic 15" bass cab the other day for $20, the model number is ca-115 (I think). The speaker is mounted in a round surround that is grey colored and kinda looks like foam, but it is really hard and doesnt feel like foam at all. I have never seen another speaker mounted like this. The guy said it was bought new about 10 years ago, I thought Acoustic had gone out of business by then. The cab sounds pretty good. It will fart out if you play really hard though. I mainly bought it to stick in a practice room so I won't have to lug an amp to practice. There doesnt seem to be anything on the web about this cab. Does anyoine know anything about it, like wattage handling, frequency range or sensitivity?