I was inspired by the beautiful pair of C30s that recently came up for sale and decided to put some of my extra drivers to good use. The result is a smaller bookshelf version using a pair of 8in D208s, 035ti tweeters and a modified LX-8 crossover. The boxes outside dimensions are 16 5/8 w x 11 h x 9 5/8 d. There is one port 1 ¾ d by ¾ deep, which happens to be the thickness of the MDF.
The LX-8 crosses over at about 2khz. It was designed utilize the natural roll-off of an LE14, which doesn’t really work the D208. To compensate I added a 1.5mh air core inductor in series with the woofer to add a gentle 6db roll-off.
The results are surprising. I haven’t done any additional measurements on them, but to my ears they sound very good.