It is all actively filtered. All drivers are Scanspeak. Tweeters are the small format illuminator beryllium domes, midrange is the 3 inch 10f, doors are the revelator 7 inch, and the subwoofer is the Discovery 12 inch. The crossover points are all 24 Db @ 3kh HP for tweeters, mids are high passed @ 315 HZ / low passed to 3 kh, doors are low passed to 315 HZ / high passed to 65 HZ, and subwoofer is low passed @ 65 HZ 24db as well.
Sounds pretty good...Not a super loud setup but I never was going for that. I wanted to keep the setup lightweight hence the use of so much plywood rather than MDF( not really bonkers for the stuff anyway). Roughly 65 watts allocated to each of the tweeters/mids, 200 watts per door, and roughly 550 watts for the subwoofer....
Here is a little sample of the setup with some electronic music on youtube...Bass is a little heavy but its car audio and for this type of music its fun... Mids and highs are pretty impressive and even from this little clip with the phone mic you can get a sense of what kind of quality they have.
