Kiza, I also have the M3 and two JL F110's with Usher BE-718 monitors. It works really well with the bass management feature built in to the amp and now I don't worry about the woofers in the monitors getting damaged when I play loud electronic music or other stuff with trumped up bass. It was a "set it and forget it" procedure when I put it together. I let the JL automatic adjustment system run its course with the supplied microphone and run them with their volume at the neutral or middle volume position and no other adjustments. I set the high pass filter on the M3 at either 60 or 80 Hz and after that no fussing necessary. Too easy.
