In-ceiling speakers need a backbox in almost all cases. Without a backbox, the speaker will have a lower sound quality and lead to more noise pollution.
![Avatar](https://cdn.statically.io/img/i.pinimg.com/140x140_RS/46/dc/0c/46dc0ce7a54e0d64719a5e7d6cca0484.jpg)
Chantel Youkers