Can I cross this horn at 500hz? in Technical/Modifications Posted March 2, 2009 I picked up a pair of these for my Cornscala project and wondering if these will be suitable to cross at 500hz? If not 500 I suspect 600? The horn is 12" deep and the opening is 4.5" tall. The guy I got these from said they were in studio monitors. I also got two drivers that look like Atlas PD5 VH with these horns but the drivers have a bolt through the center of the back. Any thoughts appreciated.