I never had a problem with the OAP C series, I aimed the long throw HF for the center to rear seating with pink noise & a Ivie IE35 RTA/SPL meter using the tilt of the cabinet. After I get the long throw aimed & where I need it, I cut off the long throw horn & turn on the second horn & aimed for the front pew to the middle, I can tell the leading edge of the HF beam from the trailing edge of the long throw HF beam...Overlap, maybe 1-pew, can't tell it, my DB in most rooms is .8-1.5dbc from front to back, side to side... I use 2-3 or 4 C-1.5 cabinets. I get great coverage & tone quality from these speakers, I really like the second horn, this what make this speaker system work. I install JBL, OAP, EAW, I like them all....