Ключевые слова: amplifier, announcement, audio, bass, broadcasting, circle, closeup, communications, direction, disco, electrical, electro, electronics, engineering, equipment, food, gray, image, isolated, loudspeaker, macro, medium, megaphone, message, metal, music, nobody, power, recording, reproducer, shape, shiny, silver, single, sound, speaker, speech, sport, steel, stereo, subwoofer, supply, surround, talking, technology, threedimensional, toned, volume, woofer,