Collocations for loudspeaker - noun

announce sth, broadcast sth
Loudspeakers broadcast the football results.

blare (sth)
Loudspeakers blared militant songs.

announcement
system

from a/the loudspeaker
Christmas songs blared from loudspeakers.

over a/the loudspeaker
We heard the news over the loudspeaker.

through a/the loudspeaker
A woman was addressing the crowd through a loudspeaker.