Call or e-mail Meniscus Audio...or Madisound, and discuss it with them. Tell them the baffle (and driver cut-out) dimsensions, and the internal volume for the bass driver. Have them suggest drivers, and do a Leap crossover design for you. Meniscus will even build the crossovers for you. You need to be able to solder. Have fun.
Speaker Rebuilding
I have an old pair of Kirksaeter monitors that sound more like a kazoo than a speaker. When my son was one year old, he used to like to play with the volume control and the music was turned on one too many times with the volume turned all the way up. I like the cabinets and after reading some of the posts, it got me interested in trying to rebuild them. My question is, are there any highly recommended books or sources for supplies to get me started? I know that some of you seem to be very knowledgable in this area. Any advice would be appreciated.