It's this sound:http://www. Freesound. Org/people/unfa/sounds/217455/. . . . Pitched down with audacity and truncated. I also made a fade-in and fade-out to ensure no clicks will occur. The preview doesn't sound right (artifacts, distortion), download it to hear the real thing. Also - it's very low frequecy, so use headphones or a woofer, or you might miss it :).
Author: Unfa