Ottosonics - modified for active speaker / amplifier

This is a remix of Ottosonics open source speaker project. I have modified the 4inch version of a standalone speaker so that I can place an amplifier inside the speaker and have ports for 3.5mm jack socket and DC barrel jack input, one speakon socket remained - I have repurposed it for an USB 5V out socket so I can power mp3 / audio source connected to the speaker without need for additional 5V power supply. See https://www.alterbauhof.at/ottosonics/knowledge-base/ for more information.

I have also modified the spherical speaker LSP6 cube blank hexagon to host two amplifiers, two 3.5 stereo jack sockets inputs and speakon for DC power supply.

Flange B is smaller to fit the microphone stand as well - mic holder dia is 14mm, the flange dia is 15mm - adjust for tighter fit if needed.