I think you are thinking of OSP. OAP is a manufacturer based in Georgia(?) that manufactures a variety of trap speakers, and now apparently line arrays. I've handled their stuff before. The design and woodworking of the cabinets look a little bit homebrew in the sense that they use generic penn fabrication hardware and utilize simple designs. The woodworking however, is top notch and the cabinets are built like a friggin' tank. I think they use a variety of drivers from Eminence, EV, and JBL, so it's hard to comment on your cabinets directly, but since they are pretty conventional designs they should sound fine for church usage. Not a bad deal with all those amps. The CE4000 is pretty nice.