As music listening methods shifted from big speakers to headphones, the quality and bass-forward sound of the recording shifted also. I missed the booming, over-saturated sound of my youth. To regain this joyful memory, and because I could not afford a high-end audio system, I started tinkering with building my own. It all started with putting 4 two dollar speakers wired for stereo into a 5 gallon water jug affectionately called the "sledge hammer". The sound it produced was deep and powerful, as loud and distorted as a subwoofer in the trunk of a '67 Chevy Impala.