MEP,
Sorry, what I posted last night was a slight rework of my email to Larry, (astrotoy) who after listening to the record on his system which some of us have heard, and is a very high quality system with excellent balance, frequency response and bass extension, was somewhat underwhelmed.
Didn't mean to contradict what you are hearing. Your comments and Ironbut Steve's comments reminded me of the lore that was going around back when the record was first out when I was just finishing High School. For the record, I have actually never seen a system shut down, blow up, or otherwise do anything beyond obviously clip the amp, mis-track the record, or simply not reproduce the fundamental bass due to lack of bottom octave response. The Moog does produce anything but pure tones so there are things to hear in the next octave or two up, even on that last low sustained D note.
I would love to find a copy on 4 track reel to reel. I might just go buy the CD. Re-listening to the whole album, by today's standards , many parts suffer from bad mastering, with a fair amount of distortion on a rather compressed treble range, very typical of that era rock recordings. Some parts' including Lucky Man are better in this respect, even though it is the last cut. I also have it on the "Best of" Lp, where it is cut 2 and it sounds the same to me. My cartridge (a couple of them actually) verified this, in that they play through a lot of other high level hot cuts cleanly, but parts of the ELP album are really bad. Although my copy has been in my hands since the 70s, by now I think I can tell if it is due to mis-tracking as it is being played, wear from previous mistracking, or bad mastering, and this to me just sounds like bad over cut mastering in places.
The speakers I was using by my test with a generator and RTA, in my room, have decent response to below 35Hz and even a little bump around 40 to 80, so they should cover the low D note OK. I was not playing it at "concert" levels however. I would think you might be right if you played it so the average spl over the cut was around 100dB in a listening room. Then the drama you state might be closer to happening. There is always the possibility that the bottom of your system response is tipped up over flat in your room - that would make it more dramatic for sure!
Anyway, time has passed, and it is not the "be all end all" demo disc that I remembered from my youth, but yes, still quite fun to listen to loud, with very dynamic bass in parts. I had forgotten till I listened to the whole album about the end of the drum solo in "Tank", the track before "Lucky Man"
P.S. In looking at your speakers you have listed - I guess you have BASS ! :)