band loudspeaker

例句：

1. 1.The band's loudspeaker was the center of attention at the concert.
   乐队的扬声器在音乐会上成为了焦点。
2. 2.The speaker was so loud that it drowned out the background noise.
   扬声器声音太大，把背景噪音都淹没了。
3. 3.The amplifier boosted the volume of the music, making it more impactful.
   放大器提高了音乐的音量，使其更有感染力。