Ключевые слова: 1960s, 2, 5gd3, 60s, 70s, acoustics, alnico, antique, audiophile, bracket, broadcasting, cap, cardboard, case, cases, cast, cobalt, desk, disc jockey, disco, funky, gray, helmholtz resonator, loft, loud, music, old, perforation, play, pop, radio, rare, recording studio, reel to reel, resistance, resonant frequency, retro acoustics, shielding, sound, soviet, speak, speaker, speakers, strut, symphony, threeway, translation, varnished, vintage, woofer,