Portable Bluetooth Speaker using Dayton ND 20FA tweeter, Dayton PC83 connected in series for mid range and Dayton DC160 for the low frequency.
The Crossover for mid and high are copied from 123toid's Reveal MTM design. The Antenna extension for TPA3116D2 Amplifier Board were copied from 12voltvids.

The Box is about 9.5 litres, port tube of 35mm dia and 3.5 inch long. The sound quality is way above my expectation, F3 around 38Hz.