Help me with the name of a Dutch speakers company.

I read about them years ago but can't remember the name or where I read it. Their design was unusual, they were a kind of controlled resonance speakers with mathematically calculated labyrinth-like chambers in the cabinets. I don't think they were ever imported to the US but can't be sure. I think, they were based in Amsterdam.
Not located in Amsterdam, but Swiss company Boenicke Audio comes to mind from your description of the labyrinth chambered cabinets.
Audiovector is Danish not Dutch.
Yeah, I heard of Boenicke.
Not Kharma, though they may do it too, I don't know.