Pair of cabinet for 15" inch speaker, Karlson X-15, Onken, or else Photo #3193130 - US Audio Mart
Help Identify Karlson speaker enclosures : r/vintageaudio
High Efficiency Speaker Asylum
Karlson Speaker Enclosure "Slot" Model Bass Coupler | Reverb Canada
Some DIY speaker hobbyists were still building the oddball Karlson speaker, first published during the 1950s. The design made grand… | Акустическая система, Колонки
diytube.com • View topic - Old Karlson speaker cab design
Karlson Cabinets | Page 2 | TalkBass.com
Vintage Altec Model 603-B speaker in Karlson Enclosure mid-century Columbus OH | eBay