Love the idea! Definitely sounds like something the Late Henry Kloss could have pulled off at a good price.
Although, I had a pretty awesome Toshiba boombox I bought new in 1987 for $300 with detachable speakers made out of mdf and a passive radiator. It would totally rock our dorm hall. It took 8 or 10 D batteries and weighted a ton. We had a shoot-out between mine and some preppy dude's more expensive Sharper Image boom box and I crushed 'em by popular drunken vote.
I still have that beast and recently refoamed the speakers. Sadly, it is all black, so it doesn't sport the early 80s silver breakdance, ghetto buster look that Quiet Earth and I prefer.