i hit 142.something on a single kenwood 600 amp and 2 jl 10's, one jl 12. then i put the kenwood in my closet and hooked up a 1500 watt power acoustik to them, then i changed the 1500 to just the 10's and hooked up an 840 watt power acoustic to the 12, i never measured it but i bet it was a lot of dbs! but now i only have the one jl 12, i sold the rest
