1.ok when it says 1.5-4ohm load does that mean 1.5ohm 2ohm 4ohm loads?
2.also what will happen if I to wire 2 subs @ 2ohms on the same amp but diffent channels? will that create 4ohm load, or stay 2ohm load? and this will half(per chan) the RMS wattage?
It depends on your wiring. 2 2ohm subs could be wired a number of ways. But yes the JL 1000/1 is stable from 1.5 to 4ohms and it gives the same 1000 watts to any of those impendances.