First I should say that my room is very different than most of you guys here with small dedicated sealed rooms. I'm in a very large open floorplan house with my HT setup in the living room. I don't get a ton of that ear popping pressure/weight that you guys are talking about. I'm ok with that though as I think it probably allows me to run my subs a little hotter and intense when I have the desire to do so and not have it be so hard on my ears. I kind of have a bit of trouble with my ears with real high pressure/weight. I still get some of it though, at least in various parts of the house (if I don't leave the pantry door open that thing goes crazy on the ULF stuff). Now I do get the kind of PR
that Dom was also talking about from the nearfeilds subs sending pressure waves into your seat and impacting your body. So from the get go, my system is probably not as balanced as some of you guys from and overall standpoint - PR
(weight, ear popping), PR
(sound waves heating your back), TR, SPL, great FR into single digits, etc. ratio. But we all have to do the best we can with the rooms we are in. For the most part, I'm extremely happy with it all. I am a bit envious of you guys with the dedicated room though
I love my Crowsons, BK LFE's and my nearfeild subs right behind me. IME they all contribute just a bit differently and I love them all for different reasons. For the most part if I keep them all within reasonable levels of each other, they pretty much blend seamlessly as a whole and most of the time I'm not really able to tell which is coming from which. Occasionally for fun I'll play the game of seeing if I can tell which is which - TT' or Subs, and I don't always get it right LOL. I'll watch a scene with both, then mute the sub and let the TT's only do there thing, and vise versa and mute the TT's and let the subs run. It surprises me sometimes just how realistic feeling the TT's can be if they are integrated well. But as with anything, it can be overdone if not careful.
I will say that I prefer the TT's in combination with the nearfields opposed to no nearfeilds and TT's. Levels etc are not quite as critical and more forgiving, allowing them to blend in easier IME.
I'll also say that when listening at really high SPL levels, my nearfields usually start to dominate over the TT's, which is fine by me since it's probably the most realistic of all. I do a fair amount of moving watching at about -12 to -15 MV and in my system around this volume the two blend to together very well and the TT's really add to the experience, even with triple nearfield 18's at my back. Although I do crank my system up a lot, I don't always want to listen at ear blistering levels in my untreated living room.
I think the Crowsons are the most realistic of the two. But I like the BK's as well ( I run them both on the same couch) because they kind of add a little something that my subs alone and Crowsons don't do quite as well on my concrete slab and style of my couch. I like to think of as the trampoline effect. My couch is a little different form the actual theater chairs that most of you guys are using. Its a three seat leather couch that has a metal rectangular frame on the bottom. I specifically bolted two BK LFE's in the middle, right under the MLP because it has a lot of flex and when they are cranked up, it makes me feel like I'm on a trampoline. Some may not like this and say its unrealistic/unnatural, but I love it and feel that it works well with what the Crowsons and nearfields add. I find that this effect is the strongest in the ~ 15 to 27ish hz range (where the BK's shine IMO, at least on my couch) and can be almost vision blurring when cranked up. Again, probably not the most natural and some may hate it, but I love it and find it works well, especially with the nearfields delivering the slam.
And then there are the Crowsons! Man I love these things as well. They are so realistic and can add a little that the nearfeilds alone sometimes don't IMO, like certain vibrations in the armrests, under 10hz stuff, etc (at least at moderate volumes with my set up and couch). My Crowson set up is probably not quite as optimal as coolrda's because of the style of my couch and only 2 vs his 4, but I still love them and will probably add 2 more eventually to help distribute the TR a little more evenly to each seat. I think that the Crowson experience would be the most optimum the way he has them set up on actual theater chairs with one on each back leg of each seat. I'm betting his Crowson setup really is killer! So I can definitely understand why he values them so much. They are awesome and I wouldn't want to be without them.
And last but definitely not least, the Nearfields! IMO they are awesome and I most definitely would not want to be without these! They can deliver serious Slam, TR, and PR
all at the same time. I would choose them over the TT's if I had to make a choice. Luckily I don't have to choose and can use both!