Given two speakers and their datasheets what should I be looking at to determine if one is better for me than the other? I realize this could be a broad question, but I'll frame it in my context. I'm mainly interested in the 100Hz to 400Hz range, I don't care too much to go higher, lower might be nice but not a requirement. Currently I'm using this 4" speaker from Dayton, here's it's datasheet.
My problem is now I want to get a little more volume for my signal without the speaker distorting. I have plenty of output power left in my amp, but my louder signal peaks seem to be physically pushing the speaker out and making an odd distorted sound. I did achieve more volume by using a compressor the other day although I'm still learning how to adjust it.
Back to the speaker though this one has a fairly flat response in my frequency range, should I be looking for a speaker that can give more spl in the frequency response chart? Is something like Xmax (I think the maximum excursion) going to let me drive the speaker louder since it has more room to move?
I spent some time trying to learn about the values in the datasheet to craft a box using some speaker software, but I'm still not clear how to evaluate two speakers against each other for my application. For instance I'm looking at this speaker which looks like it has more SPL and more excursion, plus more power handling, but is it really going to be better?