I never have anything to hide with my setups so no reason to disclose. Amps are running at .5each and strapped to 1ohm. I play them all day and never have had an issue. The amps have yet to get warm. I would compare this to two Z1As. So in theory I downgraded to a smaller amp and then just doubled the power up from there.
These handle the power better, sound better (tinsel slap on the Lvl5 was terrible) also over a 2db gain. Two NSB90s are behind the drivers seat, I have yet to get the truck on the hoist but plans are to mount them under the car in steel box that would be weatherproofed.