I have been listening to my new sub for a couple of weeks now working on getting it dialed in just right. The sound of the sub and how it integrates with my Orion's is nothing short of amazing!!!! I heard the 2 12" sealed Rythmic subs at Arts house this weekend, while I think the 2 sealed units may have more output, I'll stick with the open baffle for sound quality. As you may have noticed in my pics the sub is in a home theater room which has only been used for movies maybe 5 times in the past 2 years so the bulk of my listening is music.
Most people will say there is very little information in recordings below 40 or 50Hz so there is no need for a speaker to go that low. Well I'm not so sure that's accurate. I have been listening to all types of music and most, if not all benefits from the subs ability to play all the way to the bottom. With many recordings my Orion's hint at what's there in the lowest octaves but just don't go there fully, now it's there (or hear in my room) in all it's glory. And then some recordings actually have info I never new was there at all, the kind of stuff that jumps up and scares the crap out of a guy.
I have only played with a few different subs so I can't say what it sounds like compared to brand x, y or z, except for that high dollar Revel I had several years ago. The GR will mop the floor with the Revel. aa