Hard for me to say if its too long, i need way more sub than pb12 nsd and to me im totally uninterested in buying one, so i just skipped around the video.
Maybe if i was looking up a bunch of reviews for subs in that price range i would watch the whole thing, im not sure.
Youve got a voice made for radio, so thats definitely not the issue, its just so much information being conveyed over a video when i dont want that much information conveyed over a video.
edit: rewatched whole thing, to be blunt theres a good 3-4 minutes of what seems like an SVS commercial, or a video produced by a sales rep. That can definitely be ditched