If nobody answer the question on time, the alarm will give out some sound, helping the host know the race in this turn is of no use, so the function of alarming is achieved.

若在规定的时间内无人抢答，则系统中的蜂鸣器将发响，提示主持人本轮抢答无效，实现报警功能。

youdao

The bass has fantastic oomph and the audio plenty of clarity and depth when you're holding the Jambox in your hand, pointed at your face, but it won't fill a large party room (or function terribly well outdoors, as we learned camping out for Black Friday) and still sound like something worth listening to -- and the close-set speakers don't provide much stereo separation to speak of, either.

ENGADGET: Jawbone Jambox review