, I have a question for you that I've been meaning to ask you for a while now, but forgot. My room is probably different than yours with it being very large and open, so I'm sure it changes things to a varying degree. But in my room and setup, nothing even comes close to the TR and slam that I get from the drivers (and ports if its ported) firing only about an away from the back of my chair (I'm talking placement of subs only here, not TT's). Even moving the drivers back a few inches can very noticeably reduce the effect.
IRCC, a while back you said you were underwhelmed when you tried your S3000 in this fashion. Do you think you were underwhelmed with it nearfield possibly from the DO (Dual Opposed) design? Correct me if I'm wrong here, but the S3000's are DO right. I've never experienced DO before (FF or NF). I do know that from my experiences with my sealed 18's and the ported subs that I've used before (JTR cap 2400 and Rythmik FV15HP), that when NF and firing into the back of my chair, it most definitely makes a tremendous difference in TR and slam and drastically changes depending on which way the driver is pointing. For example, if I pointed the driver into the back of the couch compared to rotating the sub 45 degrees so the driver (and ports on the ported subs) faced to the side and not into the chair (with sub in same spot behind the seat), there was a huge difference in TR and slam, even though the FR's looked almost identical. With driver facing to the side and not into back of couch, I too was mostly underwhelmed. So PVL is definitely directional. What I'm getting at here is that the drivers in a DO design may not produce as much PVL at the drivers in Nearfield position with it placed right behind you (even if one of the drivers is firing into your seat) compared to a non DO design (I'm talking only NF here with drivers firing into MLP). Or not! LOL Its just that IME with the NF subs ran this way, LF and ULF can feel amazingly intense and borderline on extreme, depending on how high of a gain level is used and how much its contributing compared to the rest of the farfield subs. I know FR's of the NF subs can be not so good at ear level of MLP sometimes positioned like this, but even so, TR can still be very strong and accurate! Besides just subjectively, I've confirmed this objectively with VibSensor just recently.
Kind of related, Dom was saying a while back in the discussion of why we may or may not feel mid bass TR and impact as strongly, is that along with the mid bass frequencies, if its accompanied by strong LF and ULF it could result in a higher impact of mid bass. I know our HT's are not outdoors here, BUT nearfield (full range bass frequencies) certainly helps get us closer to that I think, and probably even more so in larger rooms because of not as much or even no room gain IMO.
As I've said before, I feel like I'm one of the lucky ones that can really feel the mid bass chest slam and pressure. Besides NF, it makes me wonder if maybe this is true what Dom is saying and if other LF and ULF frequencies are increasing the impact of the mid bass chest slam and pressure feeling, or at least maybe increasing the perception of it.