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It would be interesting if someone did a waveform graph to see just how low those frequencies go because my understanding is, even if your speakers can't reproduce those frequencies, they should still show up on a spectrogram waveform if they are embedded in the atmos soundtrack.
The Doors
The End in 13Hz atmos
Someone did post one over at AVS
avsforum.com/forum/113-subwoofers-bass-transducers/2763785-ultimate-list-bass-movies-w-frequency-charts-518.html#post58471380
I've listened to this twice now. Once top-side via a 5.1 setup with a decent 12" sub, and then downstairs in my screening room with four 18" subs powered by Crown amps. Apocalypse Now already had an amazing low end in the original 5.1 mix, but downstairs with the four 18s and the new Atmos Sensual Sound enhanced mix, I could tell where the many of the new extensions were, having listened to the mix a number of times. The Sensual low end is mixed in extremely well, is very low and very visceral. It isn't an LFE crazy start-to-finish flick, like the latest Godzilla, (and am glad it isn't) but boy, whenever the LFE kicks in you sure know it.
The image restoration is incredible. One of the best 4K restorations of an older film I've seen so far. The 4K scan is the first time AN has been scanned directly from the original camera negative. That really helps both the 4K disc versions and the bluray versions. HDR is handled well, and is not over the top.
Where the bluray suffers some is compression on the theatrical cut disc that also has the redux cut. Thankfully 4Ks superior HEVC compression and increased 4K disc space keep the theatrical & redux version on one disc still looking good. So for a number of reasons, try to see this via the 4K discs.
Audio options are a strange mix though. I'll keep comments minimal and list the audio contents:
4K disc #1 Apocalypse Now - Final Cut - Dolby Atmos
4K disc #2 Apocalypse Now - Theatrical and Redux versions - Dolby Atmos and Dolby Digital 2.0 Surround
bluray disc #3 Apocalypse Now - Final Cut - Dolby Atmos
bluray disc #4 Apocalypse Now - Theatrical and Redux versions - Dolby TruHD 5.1 and for the theatrical cut only there's an extra Dolby Digital 5.1 track called "restored 1979 5.1 mix". Mixer Walter Murch is on record saying he's done tweaks over the years to the original 5.1 track, so having this mix on board is a very nice extra.
bluray disc #5 Bonus disc - some of the bonus clips talk about 5.1, but are all Dolby 2.0 coded. Unfortunate, as a bluray had some of these bonus short extras in Dolby 5.1.
bluray disc #6 Hearts of Darkness amazing behind the scenes movie of shooting the movie
I picked this up for $22. They could have sold this for twice the price but were smart and am sure they will recoup in sheer sales volume. Highly recommended.