Really don't know about the supposed virtues of cast vs stamped steel, but maybe it matters more for bigger woofers with a heavier magnet assembly?In any case, if stamped steel is good enough for Neumann, this matter clearly can't be that important after all (assuming a certain minimum strength of material). Perhaps it should rather be seen as a sign of a manufacturer who knows how to make the right tradeoffs between cost and performance, as you would hope in something mass-market and mid-price like Yamaha HS8s.