Nice joke No, I've spent many hours finding rigid but ligtweight materials that aren't afraid of shock impacts. I have the biggest effective area of diaphragm ( ~50 sq. cm) and very massive double sided magnet structure. 14 pcs of 85*3*3 mm magnet blocks in each cup. Headphones won't be lightweight, but my target is 500 gr. Magnets itself weight ~200 grams.