SUBatomic.
Whoa, 5hz? I think my defTech sub only goes down to 18hz.
You into pipe organ?
Def. Tech. subs are grossly overrated. It's the worst company about overinflating their numbers. If your sub is doing 35hz at best, that will be pretty good.
Yep, I do listen to pipe organ occasionally, but not the 16hz ones, more like the 32hz ones from my main fronts running full range (they go lower than my two Def. Tech. subs.). The subs are only for movies to get some air pumping.
* The only subs that can reproduce 5hz cleanly are some homemade ones, using 6 x 18" drivers or 10 x 12" drivers. Some of them used the full basement of a house as the box resonance.
There are no subs on the market that I'm aware of, that can do 5hz clean.
The best ones can do perhaps 8 to 12hz.
I think that for experiencing very low frequencies, you'll need to be sitting in your couch close to an atomic bomb!, say 1/4 mile or so, before you get pulverize.
Subatomic frequencies of lower than 1hz could be achieve just before you turn to dust into the atmosphere.
Just try to imagine, because that's the closest you could ever be to.
Or unless...
For instance, try to imagine what 0.01hz at over 300db can do to your body!