an antique soviet woofer 5gd-3 from vintage acoustics symphony

1960s 5gd3 60s 70s acoustic acoustics announcer antique archive broadcast cases classic commentator design disc eavesdropping entertainment fabric helmholtz jockey lamp loft melody microphone music old plywood radio recording reel report reportage resonator retro singer soviet speaker speakers spy strut studio symphony system threeway to top ussr varnished veneer vintage wooden woofer