Sonka Predictor Fonnyadt open baffle speaker design gyűrű Öszvér íj
Open Baffle Speaker Pics - DIY Audio Projects - StereoNET International
OZ by Ozone Design with Acoustic Elegance LO15's
Incredibly open sounding Speakers - Tri-art OPEN 3 Open Baffle Speaker Review - YouTube
UPDATE: Test speaker build. From ???? to open-baffle (not pictured) to speakerboxxx. Thanks to the r/diyaudio community for giving me useful guidance and advice and not just laughing at my silly design (