JBL 2235 is one terrific driver. It was used in the JBL 4430 studio monitor, which is about as fine as you will ever find. In that configuration the Enclosure Volume was 5 cubic feet net. Fb was 34 hz. F3 was 35. As Wayne notes, this driver can be configured in many different ways. I would stick with something close to the 4430 configuration in a true two way configuration. If you really want to have fun, add a sub. This will let the 2235 really shine by cleaning up modulation distortion. Do not be afraid to run this driver high. It crosses over at 1k in the 4430 in order to achieve ideal DI matching. Search the JBL pro website. Some goodies below.http://www.jblproservice.com/pdf/Studio%20Monitor%20Series/4430LR.pdf
http://www.jblpro.com/pub/technote/tn_v3n01.pdf
http://www.jblpro.com/pub/technote/tn_v3n03.pdf
http://www.jblpro.com/pub/obsolete/443035.pdf
http://www.jblpro.com/pages/components/2235h.htm
Have fun!
Dan