I have worked long and hard to refine my bass amp into something that is portable and loud with a good full range sound. It has taken years but I have finally found a setup that I really like. Extremely portable and sounds perfect for me. I am currently using an Eden WT550 head with two D112XLT cabinets. My current dilemma is this: I am finding that this setup is not keeping up with the two bands I am in currently in some situations. For some venues it gives me everything I need but in some cases lately it just hasn't been loud enough. My wife says she can hear it standing across the room but I can't hear it from 15 feet in front of it. In both cases my 212s are going up against 412s. In one band it is two loud guitars each with a 212 cabinet and the other band is a single guitar with a Marshall 412 half-stack. The guitars are killing it in a room with poor acoustics or in an outdoor situation. I am considering adding another cabinet to supplement the lack of low end that I can hear in these situations. I was originally thinking of adding a single 15 inch Eden cab but I came across an SWR Big Ben 18 inch cab that is within reach. I have been reading good things about this cab and think that it may give me what I need. More power from the amp (when combined with the two 112 cabs), more moving air and more low end response. What do you think?