Tales of the UnexplainedFlying saucers. Big Cats. Men in Black. Satan walking the Earth. Derek Acorah, also walking the Earth...
Tell us your stories of the supernatural. WoooOOOooOO!
suggestion by Kaol
(
chthonic, Thu 3 Jul 2008, 10:03)
« Go Back | See The Full Thread
Voigt 1/4-wave resonatorsI've designed and built several of these, the lowest of which resonated at 25Hz, driven by a 10" woofer. Rattled my patio door windows pretty badly 30 feet away.
I've also had the pleasure of "listening" to a bundle of 6 Bose Acoustic Wave Cannons simulate thunder. Jesus wept.
(, Thu 3 Jul 2008, 13:10, Reply)
« Go Back | See The Full Thread