I have a set of drivers I can use either in Bass Reflex (3 pi) or a conerhorn (six pi). My low-mid frequency is a fostex FW300. The TS parameters can be seen in this link.http://www.fostex.co.jp/int/pages/sets/prodset.htm
If with a BR will probably use a fostex ft 17h to take care of the highs. If with the cornerhorn will use a fostex horn [with a 1" compression driver].
FWIW the reoom is 15 x 17 ft. And this will be driven by an 8w 300B.