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The way the transducers are spaced, maybe 1 1/2.. The MLP was not given special consideration over the other seats since I want everyone to have a similar experience. The middle and the ends of the sectional are all pretty equal. The shakers are a little over a foot apart from each other. I think the same principles apply to these as subs. There may be some room gain involved. The type of furniture that they are hooked up to has a lot to do with how well they work. I am not sure if the sectional was a heavy steel framed unit the effects would be the same.

Maybe someone can critique my FR of the subs, lol.
 

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The way the transducers are spaced, maybe 1 1/2.. The MLP was not given special consideration over the other seats since I want everyone to have a similar experience. The middle and the ends of the sectional are all pretty equal. The shakers are a little over a foot apart from each other. I think the same principles apply to these as subs. There may be some room gain involved. The type of furniture that they are hooked up to has a lot to do with how well they work. I am not sure if the sectional was a heavy steel framed unit the effects would be the same.

Maybe someone can critique my FR of the subs, lol.
So only 1.5 transducers produced those results? That's is VERY impressive considering these are $40 a pop! I wonder if they've changed the Aura recently? I know others such as @popalock, @Archaea, and @laugsbach were not that impressed with them. I demo'd these at laugsbach system a while back and remember they did not have any ULF response. Something must have changed?

How many sections are there do your couch? Trying to understand how you can have 1.5 transducers attached to your main LP. Perhaps a better question is, how many transducers do you have connected to that section where your main LP is located?
 

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This is why many of us with carpet over concrete build platforms built to flex and use transducers of some sort (I use BKs). It is a night/day difference in floor movement sensation vs just having seating on the carpet over concrete and might be THE best single upgrade I have ever done to my HT for audio or video.
This is the key to building risers if you want tactile feedback. Intuitively, most build these like tanks to support weight...unfortunately, this is the opposite way to construct the riser if your goal is flex and vibration.


I just need to figure out some sort of EQ that will allow me to reduce below ~15hz to keep my BKs from bottoming on those BIG ULF hits. I don't want to just turn down the overall level as I like my above 20hz right where it's at, so I just need to get some sort of simple (hopefully) EQ to reduce below 15 hz or so a bit.
What amp are you using to drive it? The inuke DSP would be a great solution, or the minidsp.
 

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This is the key to building risers if you want tactile feedback. Intuitively, most build these like tanks to support weight...unfortunately, this is the opposite way to construct the riser if your goal is flex and vibration.



What amp are you using to drive it? The inuke DSP would be a great solution, or the minidsp.
So true. When I built my platform I was talking with Marvin from Buttkicker and he advised me to only make the platform as stable as needed to maximize flex and tactile sensation. I didn't even need to use 2x4s for my small couch and this platform has excellent flex.

Thanks for the suggestions. I actually have been researching this the past few nights and have decided on a Mini DSP. I am using a Buttkicker amp which has been excellent otherwise, so was hoping to just add a simple EQ in the chain and the Mini looks to be a perfect solution. I was also considering the ART 351 EQ, but the Mini looks to be better in every way and they are basically the same price.
 

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So only 1.5 transducers produced those results? That's is VERY impressive considering these are $40 a pop! I wonder if they've changed the Aura recently? I know others such as @popalock , @Archaea , and @laugsbach were not that impressed with them. I demo'd these at laugsbach system a while back and remember they did not have any ULF response. Something must have changed?

How many sections are there do your couch? Trying to understand how you can have 1.5 transducers attached to your main LP. Perhaps a better question is, how many transducers do you have connected to that section where your main LP is located?
The Transducers are mounted to 3 large board so, trying to state how many per seat is not an entirely
correct way to view this application. The large board do a better job of transmitting the shakers energy to the sectional. As far as I know, these shakers have not changed recently. This is my first experience with any shakers except at the theater. These are definetly not Buttkickers or the better Clark transducers. But, these do the job for me and compliment the strong wooferage in the room, lol.
 

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So last night I took my new Reaction Audio CX-15's over to a local forum members place so that he could audition them, he has dual Mirage BPS-400 sealed dual opposed subs in his room on a suspended floor. Not keep in mind these subs basically don't really do anything below 20hz and actually roll off pretty fast as 30hz. But holy crap I wish I had a suspended floor!!!!....LOL


Now I understand what guys are talking about, I mean with my four monster ported subs you could get tactical feel from them but you would need to have them at some pretty insane levels. Then they would shake everything in the room. But I was amazed at how easily you could get tactical feeling and at such low levels. Makes me wish I could build my dream theatre room on a suspended floor! :D
Lol why do you think I'm using Crowsons even with the massive amount of output I have. Between the switch to ported, and adding the Crowsons, tactile feedback issues are no more ;)
 

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Lol why do you think I'm using Crowsons even with the massive amount of output I have. Between the switch to ported, and adding the Crowsons, tactile feedback issues are no more ;)

This is the only advantage there is in having my theater on the second floor. The tactical feeling is amazing and it feels like there is an earthquake going on. Other than that, I wish we had basements in Houston because I would love to have my theater down in the basement for sure!
 

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I see there are notes about near field subs. Two of my 4 triaxs are up against my MLP couch.
 

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This is the only advantage there is in having my theater on the second floor. The tactical feeling is amazing and it feels like there is an earthquake going on. Other than that, I wish we had basements in Houston because I would love to have my theater down in the basement for sure!
+1 for suspended floors.

Just a single SVS SB12 sub can send ripples through my living room floor, and those subs roll off hard at 20Hz.
 

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It would be interesting to see what others thought of their system with transducers on only and then subs on only and which would win in the tactile department and any differences noted. Then turn the system on with both subs and transducer for a comparison.

I tried this last night and wonder if my results are typical of other peoples results?
 

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It would be interesting to see what others thought of their system with transducers on only and then subs on only and which would win in the tactile department and any differences noted. Then turn the system on with both subs and transducer for a comparison.

I tried this last night and wonder if my results are typical of other peoples results?

What did you end of concluding from your experiment?

I think that having a theater on the second floor would be hard for the transducers to beat nearfield subs. That is just a guess because I do not have transducers.
 

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I am in a basement concrete bunker, lol. The room is large so, the room is tactilely challenged. Only one of the subs is nearfield. Transducers on has a great feel and the seat vibration is more noticeable compared to subs only on. Subs only on, the vibration of my shirt and cloths near my neck is more noticeable. Both feel great. With both on I think I focus more on what the transducers are doing.

The subs gives that funny feeling in the chest and throat. They also can blur the power console. That means my eyeball are at the same resonance frequency of a strong bass wave, lol.

I was watching Olympus Has Fallen and when the jets fly by, it feels as if the back of the sectional is close to being ripped off. I have the feeling with transducer that I am isolated to just what is going on at the one seat Combined, sub and transducer equal a good combo. I get the seat vibrations from the transducer and the upper body tactile from the subs.
 

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new sub arrived today (and it's too late to set it up!) so I was curious how it shaped it on a scorecard, it's a dual UXL-18 sub in a 190L cabinet so I wasn't sure how to list it other than just put 2 against the driver and fill in the costs from there. I'm in the UK so translated the final GBP cost to USD (albeit driver + amp were imported from North America).
 

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@pennynike1

Alex may have a seat near the top of this list with his new setup --- coming out of nowhere with his new home theater he is building.

Four Seaton Terraforms (8 - 18"s in a ported enclosure tuned to 12hz?)
Two Danley designed B-Deaps (4 - 12" in a horn designed to play 35hz and up http://www.soundphysics.com/SPL-BDEAP32.html)
Two Ricci designed Othorns (2 - 21"s in a 35hz and up world beater designed horn )

All powered by SpeakerPower amps, in a room that is 13' wide by x' long. Alex can perhaps provide the length, which I think is still under consideration as he may shorten his space. I have to think that at 15z this system is going to be top 5? or top 10, and at 35hz and up it's going to be nearly unrivaled on these boards ---- assuming it all comes together.
 

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@pennynike1

Alex may have a seat near the top of this list with his new setup --- coming out of nowhere with his new home theater he is building.

Four Seaton Terraforms (8 - 18"s in a ported enclosure tuned to 12hz?)
Two Danley designed B-Deaps (4 - 12" in a horn designed to play 35hz and up http://www.soundphysics.com/SPL-BDEAP32.html)
Two Ricci designed Othorns (2 - 21"s in a 35hz and up world beater designed horn )

All powered by SpeakerPower amps, in a room that is 13' wide by x' long. Alex can perhaps provide the length, which I think is still under consideration as he may shorten his space. I have to think that at 15z this system is going to be top 5? or top 10, and at 35hz and up it's going to be nearly unrivaled on these boards ---- assuming it all comes together.

He needs it, dude literally eats bass for breakfast. We were tapping out when he was in town and he was just getting warmed up! :D
 
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