I have a set of PA cabinets that I can't find ANY info on. They stand about 4 and a half feet tall. They have 2 15" drivers. The top driver has a solid dust-cap, and the bottom driver has a hole in the center of the dust-cap. The horns are set above the drivers, and are powered by Magna 124 high-frequency drivers. I'm not sure of the history of these cabinets, or what modifications they have. On the back panel are two brass plates with 2 1/4" jacks on each. The jacks are connected directly to the drivers/horn. Mounted on the opposite side is a Sunn CN-2 Crossover network. This has 3 jacks in a pyramid formation, and is labeled "In or Out." I can make little sense of that, but I suppose that the CN-2 will be patched directly to the drivers for full range. The cabinet is designed similar to the full range horn system on this page:
http://www.sunnamplifiers.com/catalogs/1979/1979catp3.jpgbut, it lacks the middle section with the 2 small round holes. There is also porting on either side of the horn(which doesn't extend across the front entirely.) Then entire thing appear to be made of 1" plywood. Mounted on the top with some sizable bolts are plates with hooks (for hanging, winching up to a higher plane?) Any help would be GREATLY appreciated.
Matthew Pence
rocket24@bellsouth.net