https://www.diy-audio.eu/sk/seas/480-excel-w22ex-001-e0022-8-magnesium-cone-woofer.html
Excel W22EX/001 - E0022 8" Magnesium Cone Woofer
Precision cast and surface treated magnesium cone coupled to a natural rubber surround showing no sign of midrange (edge) resonances. Heavy copper rings...
excelmagnesiumconewoofer