Not all of them. A lot of the commercial ones are simply deep bass and bottom out at 25hz which is still in human hearing. I was after true infrasonics, 16Hz or below if possible.
]]>vhfspeeks2017-04-18T11:58:54-00:00Re: Subsonic Speakers?
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=85003&th=21187#msg_85003
That's true, but the point I was making is that subs radiate the bottom octaves and are what create the tactile vibrations as well as the auditory deep bass.
Using this to help set someone's mood is serious business. You are essentially altering their emotional reality through sound waves. The military has had this capability for decades now. You would do well to keep those facts in mind before setting up a system like this.
But the champion of subsonic radiators is the Eminent Technology TRW-17. Here's a quote about two of their experimental projects with the TRW-18. "The first project took place in Nelspruit South Africa where we exposed elephants to the infrasound component of a rainstorm at an equivalnet distance of 25Km and the elephants immediately detected the sound. The second project took place in Orlando where we exposed alligators to 19Hz with underwater and airborne sounds independently. Each time we introduced the airborne infrasound the alligators responded by bellowing".
So when the asshole with the fartbox-in-the-trunk pulls up next to you at a stoplight, and you have a TRW-18 in your trunk, you can at last retaliate.
]]>AudioFred2017-04-20T13:14:08-00:00Re: Subsonic Speakers?
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=85015&th=21187#msg_85015
They were used in a theater I worked at for a while for special effects. BTW the main speakers were Altec VOTs. It made for a great stereo about row 10. I figure a van with a pair of opposing 30Ws and about a kilowatt or so of amp power would destroy anyone who thought their car system was really the ultimate. Of course you ought to exit the van before turning it on. It might crush your chest or at least cause ear bleeds. ]]>gofar992017-04-21T02:00:34-00:00