Thanks to the sandwiched speaker orientation, I was able to fit 4 Full-ranged speaker drivers in one tiny enclosure (2x7x2'). Hacking & recycling helped me save money! Try to do the same :D SMALL SIZE, BIG SOUND Despite AirJam's tiny size, it has the ability to surpass its competitor's performance. Ready your tools, we are making one from scratch! The previous ' DIY Bluetooth Speaker (v1.0)' had some minor flaws so I listed all the possible improvements and built a version 2.0, named AirJam. Meet AirJam, the DIY Supercharged Bluetooth speaker.