Wow!!!! I just took apart my dad's speakers to see exaclty what they've got. The grill is mounted so that it won't come off, so I've never seen the drivers. It has a tweeter, a mid, and 2 6.5" (I think) woofers.
Well, I just unscrewed the back and lifted it off (well, as much as I could; the wires don't have much slack), and I can't believe what I see!!!!! One of the woofers is indeed a woofer, but the other is a passive raidator!!! Man, I've always loved speakers with passive radiators. I don't know why, but they just seem neat to me.
What do you guys think about them? I'll post some pics of 'em.