To the article say if there are any still in working condition anywhere? I don't recall

Kind of reminds me of the NYAL advertisements from the 80s/90s about the Sound of God amps that were rated at 10,000 watts delivered by a flat bed truck and installed directly to the power grid. Am I the only one that remembers this? Enjoy the music

 

"It could hit frequencies as low as 8 Hz." The Eminent Technology TRW-17 Rotary Woofer goes down to 1 Hz.

 

I can't think of a better way to spend wealth than this.  I hope it sounds good.