I dont know what causing that peak, but it might be Audyssey dynamic eq which i just realized i did not deactivate (Audyssey room correction was bypassed on all measurements). \n\nThe reason for crossing that high is that the subs, or actually more bassmodules, is just for the fronts and the crossover for them are placed after the pre\/pro. This is 2 8" in 2 cabs, one beside each er18 and they are perfectly capable of 200hz. The idea was that the er's should be a lot better in the midrange not having to deal with bass, whitch is working fine, but still not perfect. \n\nThe LFE is handled by 2 15" tapped horns whitch is lowpassed at 80.