Originally Posted by Mark Seaton
While I believe I understand what you heard and are referring to, there's A LOT more to the top end of a speaker than the brand/type compression driver used. Implementation and design goals is everything, and the SH50 was never designed for a living room. Every pro installation of an SH50 will have EQ available, and the tightest response curve and exact voicing is not the top priority nor reason to use the speaker. While a compression driver can set some outer limits, the horn/waveguide and crossover design are often dramatically more significant contributors so long as there isn't a significant mismatch between driver and horn. The SH50 is optimized for a different application, so expect a little massaging to get the very best balance in a home. There are many tools with different required knowledge and complexity available to do this.
No doubt. There are some, like Geddes, that believe all quality compression drivers have identical - or at least indistinguishable - SQ and that the ENTIRE difference in SQ lies with the horn and implementation. Looking at the research he did to come to that conclusion, and correlating with my own experience, I'm not so sure about that. I think there are innate audible differences in compression drivers. But I also believe that, as you point out Mark, implementation and design goals are by far the largest part of it(SQ) and without that it doesn't matter how good the compression driver is.
But aside from everything else you mentioned, I think the overall design goals of Danley's horns work best in their designed applications, namely large venues. The extremely tight controlled directivity pattern was something I simply, in the end, didn't prefer in my room. Given my experience with the JBL M2, I feel that a well designed wide pattern controlled directivity design is superior for small rooms. But of course opinions will vary.
Edit: And by the way, I've never heard your designs at low volumes, so none of my comments apply to your designs. Low volume listening is typically only possible with the speaker in my own space, demos never seem to be at low volume