Subwoofer from 8" Yamaha components

This is a rebuild of a Yamaha YST-SW012 subwoofer. It's a small sealed enclosure using the 8" driver and plate amplifier. Couple a pair of these with a full-range satellite speakers and you have a proper stereo system with punch.

Blog post:
https://rdphysics.com/2021/11/11/circular-sound-sustainable-loudspeakers/

YouTube video explaining the recycling aspect of this build:
https://www.youtube.com/watch?v=j3O_LqKJCOY