broadband speaker 5gdsh-4-4. old speaker

radio antique soviet broadband paper stamped 5gdsh44 5gdsh woofer speaker 5gd3 vintage acoustics symphony old cases speakers retro 1960s 60s 70s helmholtz resonator threeway system fabric veneer plywood strut ussr sing commentator varnished reel to singer listening reportage dj fm design archive pop audio broadcast interview lamp home speak spy art