Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
I liked the CH-3 in comparison with the 2370, so prior to the mid-1990s, it was my horn of choice. But that was a couple generations back.
The CH-3 uses a diffraction slot in the throat - as all CD horns of that era did - so while I found it to be less edgy than other CD horns, it still wasn't nearly as smooth as a waveguide horn like I use today. In fact, the harshness of diffraction-slot CD horns is what made me seek out radial horns with relatively uniform horizontal patterns to replace them.
Personally, I'd sell the CH-3 horns on eBay. There is still a market for them, mostly as repair replacement parts for loudspeakers that used them. But for a new cabinet build, definitely go with the much smoother H290C waveguides.