tannoy:
The sound of the speakers you linked on YouTube video is not very good (and that's putting it mildly).
I went the extra step and played it (the video) through my mini-system via the iMac and the sound was even worse.
I have a small vinyl collection of Maori tribal music and it sounds a LOT BETTER on my vintage single driver speakers than it does on the speakers in that video.
Whether the problem is with the video/recording quality, or not I do not know, but I do know that it (the video) sounds awful.
DeKay