Link to an owner / builder in Israel, who built some wicked BIG flying rigs: http://srforums.prosoundweb.com/index.php/mv/msg/19198/0/0/0/
http://billfitzmaurice.com/phpBB2/viewtopic.php?f=13&t=5749&hilit=dr290

Link to a Vet Fest, featuring DR200's and Titan 39's. http://billfitzmaurice.com/phpBB2/viewtopic.php?f=13&t=6353&p=59311&hilit=dr200+build+photo#p59311

Link to DR200 build photos: http://www.finnbass.com/showthread.php?t=2210&highlight=dr200
(You can see the 'guts' of the split folded horn...oh my!)

Link to another DR200 build: http://www.frappr.com/?a=viewphoto&id=2160552&pid=3278433
(The DR series are the most complex / high performance BFD cabinets. The smallest, the 200, uses an 8" driver. DR250 uses a 10" driver. Can you guess which driver is in the DR300?)
hint, hint
200mm, 250mm, 300mm