the box Speaker 18-500 for mini scoops : r/SoundSystem
1600W Single 18 inch Design Box Sound System Line Array SA208+SA18B Active Subwoofer Crossover | LINE ARRAY SPEAKER | Sinbosen| Audio sound system manufacturer
Source 18" Subwoofer Speaker Box, Pro Sound System, Mini Line Array System on m.alibaba.com
Amazon.com: Pro-Ject Box - Speaker Box 5 - Red Surround Audiophile Bookshelf Home Speaker, Set of 2, Silver : Electronics
STL file Sound System stack - speakers.・Design to download and 3D print・Cults
12 Inch Professional Audio Stage Concert Rcf Speaker Line Array Speakers Sound System For Church - Operational Amplifier Chips - AliExpress