The
Outlaw RR2160
already set to crossover at 80Hz, you can plug it into the LFE input.
I assume what I need to do is set the crossover frequency on my Outlaw to 80hz (where I want it), and then plug the Outlaw into the REL through the low level input, then crank the crossover on the sub to 120hz. The sub should only be receiving the low frequencies anyway so by cranking the subs crossover up all the way I shouldn't be attenuating any frequencies.It will work too, however the signal has to go through two crossover instead of one.