![Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics](https://m.media-amazon.com/images/I/613WeI4+eHL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics
![Pair | Liionidas Extreme Open Baffle and Crossover and Drivers | High Class OB solution - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY Pair | Liionidas Extreme Open Baffle and Crossover and Drivers | High Class OB solution - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY](http://www.lii-audio.com/wp-content/uploads/2021/07/Liionidas-Extreme-5.jpg)
Pair | Liionidas Extreme Open Baffle and Crossover and Drivers | High Class OB solution - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY
![Experimenting with an open baffle guitar cab. Can anyone offer tips on room placement and OB design in general? : r/diysound Experimenting with an open baffle guitar cab. Can anyone offer tips on room placement and OB design in general? : r/diysound](https://preview.redd.it/liue6q0mzl861.jpg?auto=webp&s=456ed6a741719a7605f7ea73499373adb6d3bed1)