Batteryless portable boombox

Save money and the environment by making a portable bluetooth speaker powered by external USB power (power bank, USB port, phone charger).

Video: https://youtu.be/7Ic2OQQtlV8
Blog: https://rdphysics.com/2022/03/17/bluetooth-speaker-without-battery/

Peerless 3" full-range at SoundImports:
http://ndt5.net/c/?si=14570&li=1627332&wi=355652&ws=YT&dl=en%2Fpeerless-pls-75f25al02-08.html

Update: Added BB2 version using Dayton Audio RS100 drivers.

Bluetooth receiver/amp:
http://ndt5.net/c/?si=14570&li=1627332&wi=355652&ws=YT&dl=en%2Fsure-electronics-aa-ab41136.html

6.5" passive radiator:
http://ndt5.net/c/?si=14570&li=1627332&wi=355652&ws=YT&dl=en%2Fdayton-audio-dsa175-pr.html