03:39This bass test contains mainly infra-sound, made for playback on a fan-like speaker known as a rotary-woofer. The original upload I did of this video was of poor quality, and this
00:51capable of generating greater than 120dB SPL of frequences from 20Hz down to less than 1Hz!!! Read more at http://www.eminent-tech.com/main.html . This video is the first time this
