CS1214 | 30 cm (12 inch) subwoofer, with double magnet suitable for enclosed, bass reflex and bandpass boxes
JBL On Stage Speakers for iPod
Amazon.com: JBL Professional Control 30 Three-Way High Output Indoor/Outdoor Monitor Speaker, Black : Everything Else
30pin Bluetooth 5.0 Qcc3003 Audio Adapter 30 Pin Music Receiver For Jbl On Stage Iii Iv Onbeat Air On Time 200p Micro - Speaker Accessories - AliExpress