Ключевые слова: active, amplifier, audio, background, bass, big, black, concert, electronic, entertainment, equipment, event, hifi, karaoke, large, live, loudspeaker, loundspeaker, mobile, modern, monitor, music, object, passive, performance, portable, power, presentation, professional, show, side, singer, small, sound, sound speaker, speaker, speakers, stage, stand, stereo, studio, surround, surround sound, system, talk, theater, wood, woofer,