[Wes Whitmore]

Hello Everyone!
I'm new to the forum, and haven't been on many home audio forums.
I have had a single Dayton IB15 and a Dayton 150 watt plate amp for a while now. It is in my partially finished basement that is 31x16 or so (I have a half wall that the couch rests up against, making the HT area roughly 15x16). I have it mounted in the wall to the right side of the listening position under the stairs. It was the only place to put it, but it sounds great. The output qualities are nearly perfect, except for I think I am getting into a little bit of overexcursion during some DVD playback at high volumes. I heard it during the intro of Gladiator during the woods fighting scene. Now I know that I went with a low power speaker with moderate XMAX. The price was right, and I am about an hour from Parts Express. Now, I want to add to the system just enough to get rid of the slight overexcursion so I don't hear the distortion. Do you think adding one more of the Dayton's will do the job? My SPL is fine, I just don't like the distortion. Since I only have one driver, I can yank it out and get 1 or 2 Soundsplitters too, which seem to take more power and have much better XMAX. It doesn't seem that people are really using the Daytons anymore. Any reason why?
I'm really just looking for some general guidance. I don't have a BFD, although I do have a DBX driverack to use if I have to. I don't have any RTA gear, and the system is running without any EQ. My ears don't know better, and I very happy with the SQ of the whole system.
Thanks,
Wes