ON4 is a medium system in the ON-series developed in their collaboration with OJAS. It combines a multicell from OJAS with an Avant bass/low-mid unit and a Devor 23 low frequency subwoofer.
ON4 is a medium system in the ON-series developed in their collaboration with OJAS. It combines a multicell from OJAS with an Avant bass/low-mid unit and a Devor 23 low frequency subwoofer.
