Bill and I did a decent amount of listening with the original design and it just didn't seem right. The compression driver is very good and from the beginning Bill thought the CD just sounded like it needed to be paired with something better than the B&C 12" woofer. The FL-450 wasn't mating well with the woofer for some reason. Highs sounded great, but seemed to stand out because the mids just weren't quite living up to what we thought.
After some more tinkering we decided to switch out the woofer and the Delta 12A was a pretty close fit in the same cut out. Even before reworking the crossover for the new woofer, we could tell it sounded better right off the bat. Lighter cone? No 'wet look' coating? No idea. But it did sound better and blended better. The Maximus needs something pretty nice for the woofer, so I figured the 12" Deltalite should be up to the challenge. I was going to pick that one from the start, but just assumed B&C might be better.
Hoping to get the Deltalite next week and we can rework the speaker with it. That should be the final piece of the puzzle.