
1) Announcement device 2) Announcement medium 3) Auditorium fixture 4) Brief announcement medium 5) It gets the word out 6) Medium for announcements 7) Patriarchy 8) Principal means of address 9) Rally rental 10) Set of speakers 11) Speakers for speakers
Found on
https://www.crosswordclues.com/clue/pa-system

The public address or any sound reinforcement system.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

A Public Address System is a collection of speakers and amplifiers. PA Systems are used for audio in everything from concert halls, to churches and even your local bar.
Found on
http://www.songstuff.com/glossary/P
No exact match found.