It's a Behringer B212A. I kinda get what you mean, the mids/highs do seem to get drowned out at times (if it was drowned out by a RICH bass, it wouldn't be that bad but its cheap bass).
I sort of thought this out a little more, would I be better off just getting a 2nd loudspeaker (probably a Mackie whenever I can get that sort of money) because I realize that the music will sound better in stereo.