After good experiences with LO15 and SEOS-15 combination in dipole I wanted to take things one step further. SEOS-18 is one step better regarding CD in the 800hz region. I also wanted to have a more (super-) cardioid patern in the low/mid region to match SEOS-18. The LO15 is now housed in a resistance enclosure inspired by http://kotisivu.dnainternet.net/anukaa/CardSub/CARDSUB.html
This arrangement outperforms previous SEOS-15 dipole setup in bass extension, bass pressure and ease of placement without losing the advantages of a dipole. Also integration between woofer and waveguide is much better.
Excellent solution I’m very happy with!