In 1982, Jacques Mahul explored how the classic Onken bass-reflex principle could be reduced in scale without losing musical integrity. This article—faithfully translated from L’Audiophile—details the Mini-Onken enclosure, its theoretical foundations, precise calculations, and the development of the Focal 10C01, offering rare insight into the transition from Japanese Onken designs to what would later become Focal/JMLab.
