My only experience was owning Alon V MkIIs, which were like the Qualio IQ - sealed box woofer under an open baffle with mid and tweeter. I never got used to the sound and sold them after a couple of years to happily return to box speakers. The open baffle sound was just too diffuse sounding for me.
Open baffle speakers
Open baffle speakers design is the simplest , to get bass response similar to other design , like ported, the baffle size must be huge to avoid low frequency degradations . Tipical size the baffle width 10-20" got weak bass performance. I am wondering how open baffle speakers design became so popular ?