Ключевые слова: amp, amplification, amplifier, announce, announcement, audio, blue, broadcast, calling, communication, electric, information, isolated, loud, loudspeaker, loudspeakers, megafon, megaphone, new, news, no people, old, one, outdoor, public, rusty, shout, single, sky, sound, soundsystem, speak, speaker, system, talk, voice, volume, warning, white, wire,