I'm curious about a couple things. I've been trying to figure out how drivers are limited. I've been having trouble finding the details with google, and I know there are a few engineers that roam around here.
Here's what I think I know:
The lower the frequency the less magnetic force generated by the voice coil. Plus, lower frequency waves are larger volumes of air requiring more energy to produce. Tweeters are limited on producing high frequency sounds due to the mass/inertia of the cone.
I'm trying to figure out what is causing the roll off at each end of the spectrum, and how the speaker can maintain a flat response even though higher frequencies produce more magnetic force. Is this a correct model or am I missing something? What about the construction of the driver gives it a flat or curved response?