The post says bass E ... If they are listening to bass guitar playing a low E then what they are localizing is the overtones at much higher frequency. If they are playing a straight 41 Hz tone from a tone generator, then they may be localizing based on harmonics (from distortion produced by the woofer driver). I highly doubt that anyone can localize a pure 41 Hz tone - I could be wrong, but the wavelength is too long to localize to any degree in a typiAssuming you're not an alien, other humans should possess the same or similar capacity to localize, what, 41Hz sound. Can they? In what numbers? Does the ability change with age, sex, experience, physical attributes?
Pulled the trigger on a pair of these just now. Should arrive Friday. I think they will mate well with my speaks.
https://www.amazon.com/gp/product/B009F8Y7SO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Intended to order direct from SVS, but they were sold out of this discontinued (I think) model. They do supply a link to Amazon, suggesting purchase there. Amazon apparently has fewer than twenty left, and that may be the last.
Nice subs!!! These should sound great. Good price too!