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FWIW, I've done the cone doping myself, and my first reaction to doping paper cones is suspicion.  Why does it "need" this, and how/why will it really "help"?  But I injected this example only to set it apart from the [Altec] horn doping, relative mass versus X, as I think this still relates to the idea/questions that initiated this thread.

What still remains unclear to me is how to predict/control what I hear as a more-or-less "self-induced" "ringing" in horns that appear to my eyes alike to the bronze example in the picture.  I have also seen/heard chrome-plated horns similar to the bronze example, and they were terrifying.  I don't "see" this in Romy's wide-throated, stumpy, band-limited wooden horns because these are pretty new to me and so do not "ring my bell", as it were, and they also "make sense" to me based on my own experience.  Why do I "see" that the bronze horn will "ring", and/or what am I missing with respect to curves vs. FR vs. throat vs. length in this case that somehow makes this particular bronze "wide-range" horn free of the ringing my experience "tells" me I would hear?  I don't expect a primer in horn design, just assurances that I'm off base would be fine, and I'll do my own homework from there.

Best regards,
Paul S

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