specs for the bass bin can be found on Bob Crites web-site - http://www.critesspeakers.com/cornscala.html
They really sound great. Bass is tight, midrange is strong, very strong. For the mid-range I used the Selenium D405 2 inch midrange drivers with M2380 2 inch midrange horn. CT125 Tweeters and CW1256C Cast Frame woofers.