12 foam columns attached to a single center piezo...
this is the mod I used for my 12inch pads, I used 8 foam cut outs to disperse the full force of the hit... it actually works quite well, even if I hit the cones directly I dont get an overly exagerated velocity ready.
I think they started this pattern from the -mesh kits they came out with in 2014/2015 so this new one holds a lot of promise, maybe I'll get a chance to own one if amazon ships it to Qatar lol