Good montage of clips.
I will take issue with you on one point.
I've been to Popalock's house you showed in that video and experienced first hand what 16 sealed do in a 1500 cubic foot space. (I'm videotaping the footage below!) I've also been in a half dozen theaters now with eight 15's or 18's (or greater subwoofer firepower) including my own. (Gorilla83, Carp, Scrappydue, Archaea, d_c, desertdome)
This is me filming @popalock
s with the Irene scene and witnessing the party tricks! (timestamp 15:35)
Multiple sealed is impressive -- but even Austin with his 16, 18's will admit to you it's most
impressive in weird places where the bass waves combine into the party tricks. Like the hallways, bathroom door entrances, etc. At the actual seats during the Black Hawk down - there wasn't the same level of crazy going on as there was at the hallway entrance. Crazy? at the seats - yes! -- same level of crazy in the seats as depicted in the videos no...
Nevertheless, I'm a HUGE fan of nearfield sealed 18" subs -- I think it's probably the single most important bass improvement you can make (for a basement slab based theater) - subjectively speaking and based on my experiences. However, ported subs up front (or some of the guys love them nearfield too) are a LOT of fun!
You said -
i.e. ^^^this, and videos like this
That's like 2000% cone distortion, the PA cones are pushing out to where there is -20 BL
videos like pop's, notnyt's and mine, we are moving things with ACTUAL
You know... actual SPL
s. Not "20hz below tuning" box-fan particle velocity turbulence effects.
The bass wants out of the room and it is desperately seeking a place to escape...
You know good and well you can move things with actual sound waves with a ported sub setup too. According to the vibsensor thread - apparently more tactile energy with ported than with sealed across the bass spectrum. I have videos of the pair of my former JTR Caps in my room shaking the projection screen on the wall so bad during dubstep type song it was hard to read the windows fonts. -- that had nothing to do with bass below port tune at high distortion.
The wind effect from the ported subs when cranking on them hard (and little or no HPF) is the stuff of 4d cinemas. An explosion happens on screen and your leg hair swirls in the wind, you get that cooling effect, and dust starts flying around the room -- it's very enjoyable IMO. Perhaps oddly, it's something I truly miss from the days I owned a couple JTR ported Captivators. (The wind effect is missing with my current eight UM18-22 subwoofer sealed system).
These first two video are ones I filmed in my room -- the third is of the ULF4000 which I still haven't heard, but will this weekend!
Watching those videos - how can that not be fun too?!?! Answer - it IS fun!
Anway -- your post proclaiming sealed as so much superior reads a bit biased to me. I know you love your sealed, but there is nothing wrong with a strong ported setup. I'll also make note that in the Blind Subwoofer Shootout I hosted in 2012, not one single enthusiast correctly identified all subwoofer box alignments correctly (ported, sealed, horn). These aren't just newbies --- these were enthusiasts from multiple states throughout US (i.e. subwoofer aficionados with enough interest to fly or drive multiple hundreds of miles to listen to subs all day in a blind test) -- The attendees established clear quality tiers in their collective/summed voting scores, but none could identify box alignment. This indicates pretty clearly that these sealed vs. ported vs horn forum wars ----- just don't matter in the end.
No, in the end it's simply about clean SPL output - and you can accomplish it a variety of ways!
I'd imagine a pair of JTR ULF4000's would pretty handedly best my eight sealed UM18-22 in real world home theater use (all things considered). In the KC crawl coming up this weekend, Jeff is supposed to be bringing down a single JTR ULF4000 and putting it up against eight of @carp
s SI 18HT. I think reality is the JTR with just two 18" drivers will really surprise some of the junior attendees in that matchup.
The old veterans already have a clear idea of the quality design and potency JTR can bring to the table!
No, one ULF 1400 won't beat 4 UM18-22. Nobody said it would -- but it would be fun to put one ULF4000 up against 4 UM18-22, or 4 SI 18HT. I think that'd be a different story entirely.