Thanks again, everyone.
As much as I might prefer the Classic 15s in my living room, my poor wife would flip. She has adjusted to my having the Daedalus Apollos in there, but it didn't happen overnight. A more likely choice will be a smaller driver/enclosure that will perform best in my home office. It's 10'4"W x 14'4"L x 8'H. My listening position would be approximately 8' from the speakers. The speakers would be approximately 6.5' apart.
8 inch drivers??? I'm guessing 10" or 12" drivers would overload the room. I'm not going to be cranking the volume.
To be honest, I'm unsure I want to go through with this, but instead buy an awesome pair of headphones. There. I said it.
[Yeah. I know. WTH is going on in his brain? ]
Edit: I should mention that there's nothing wrong with my Apollos. They sound amazing. It's just I have this itching to experiment....to keep trying things....it's the dreaded Audio Nervosa, isn't it? When does it stop?