Originally Posted by coolrda
Yes, yes and yes.
Here's a further explanation. When I did all the seat and floor testing, I had an individual single seat unlocked. I initially planned on 5 tests, with MA's configured with 1(rear foot), 2(both rear feet), 4(all feet), dual array(2x each rear foot, side by side, 4 total) and stacked array(2x vertically stacked with 1" wood block isolator between them). With so much to test I only got half way through these tests. I never even measured the 4(all feet) configuration. I tried it for about 10 minutes with a few clips and preferred the rear only. While this is subjective only, they are pretty spot on to measured. This will all be tested thoroughly in the coming months. Ive never heard anyone going dual array or stacked array, but I gotta know what that measures and feels like.
How did it feel? With a MA at each foot it felt like a mini D-Box. This was with them sitting on carpet/pad. Think of it as intense but mostly single axis. What I've found is that even when your peak PSD is the same, 2 close or equal axes response is far more tactile than 1. With MA's in the rear only, you have a throw arc(tilt/hinge effect)even if it 1/1000 of a degree. I believe this excites the Y axis(frontback)to match and even exceed the Z axis(up/down). The other thing that comes into play is weight. Crowson says these are rated for 1000lbs but recommends 250lbs per MA. More MA's lower the ratio and it makes sense that increases TR as acceleration should increase. I'll have to measure that. What I do know is my seating is completely saturated setup as it is. All seats feel the same intensity and that's regardless if we're reclined or our feet are touching the ground. My recommendation is four along the back of a couch even if you need to add feet or build up a platform.
Thanks, that all make sense, and that was what i was thinking too. With one MA in each four corner, you get a Z "concentrated" movement, while with them in the rear, you get the tilt effect you speak of, that goes in several directions.
My couch consists of a interlocking right seat, a center section and a left seat. I made a wood frame to connect them all, and have one MA in each rear outer corner of that frame.
I LOVE the two Crowson's i have already, however i have two problems in really heavy scenes, like the famous deleted scene from Jurassic World, or choppers in Lone Survivor:
1. My amp goes in protect mode.
2. The thermal protection in the MA's gets triggered.
So if i get two more MA's, and mount them either in each front outer corner, or the rear inner corners of each seat, I get more headroom, AND more effective TR.
You read me?