That sounds kinda cool

Does it make any noise though? I mean, theres still notes coming outa the subwoofer, it's just an added bonus that it shakes the car

Or do you still buy subs, then add the aura thing for more vibration?
Hi, in my regular car, I use tweets & midranges as the only speakers, makes placement easy
The Aura unit just bolts/ fixes to the seat frame, I used the seat back, more space than the bottom
The mids, JBL alnico magnet, full range, I just let taper off naturally, around 100Hz of so
The Aura's work up to 125Hz, but they are cleaner if crossed out of by around 100Hz
The net overall result is like a horn loaded sub, very tight, very defined
No actual sub speaker needed
We played around with a car using both Aura's and subs together
Sounded cleaner without the subs, mind you while sitting in the seat
if not in the seat, of course, you don't have the sub effect
By the way, it doesn't take much power to drive those Aura's
As to noise, you are certain to find loose hardware & fittings thru out the car
Including the glove box contents, a cut bit of thin foam sheet works good here