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Vasyachkin wrote:

waveguides as far as i can tell are designed to equalize the power response. for example if we are talking about a typical 2-way speaker with a 7" midbass and 1" tweeter then there will be a discontinuity in the power response around the crossover. because just below the crossover the woofer is quite directional and just above the crossover the tweeter is radiating in all directions.

Well, Vasyachkin,

I did not say that I do not know what waveguides are I said that I do not understand it and I said that people who pitch it in my view practice what you call “wrong science”. The wave guiding ideas have in my view absolutely no correlation with auditable experiences and explain absolutely nothing. The wave guiding is sell-serving idea for speaks theorists to think and to talk about speakers and nothing else. With my exposure to the subject I have mane a rule: as soon people begin to talk about waveguiding, power response, and management of speaker’s “energy” then I lose interest and walk away. I know what will following next  – the sonic nothingness.

Vasyachkin wrote:

when you say conventional tweeters have 30 - 40 degrees - at which frequency is that ? probably not at 20 khz. sure at some low enough frequency a ribbon in effect becomes a point source. but at higher frequencies it should become more and more directional. at around 20 khz it seems as if the response should quickly fall off as you begin to move off-axis vertically ( as you move either above or below the top or bottom of the ribbon ). i mean at some high enough frequency the ribbon should be launching a cylindrical wave front so if you're either above or below this cylinder your treble should be attenuated. and this cylinder may only be a few inches tall. obviously depending on how much treble attenuation you're willing to accept you can say it has more or less dispersion but what if i don't want to accept ANY attenuation ? what if i want to have absolutely flat response at any angle ? i believe that with my configuration that is exactly how it would work.

Well, you were pontificating about wrong application of science and suffer from the very disease that you were warning against. Why do you feel that your brain is a spectral analyzer and that you need to have 20kHz and 0dB at your “3-inch sweet spot”. Go to live consort in the very best hall and in the very best sit and run spectral analyses from there. You will have -3dB at 6-7 kHz but you am sure will not be complaining about a lack of HF. Partially (only partially) what you say about the cylindrical nature of HF coming from ribbons is true (but there are cases where it is not is true) but so what? People who want are looking for motivations to do their things; people who do not want are looking for excuses not do the things. Try to find out what you are looking. If you are willing to use ribbon, know what you would like to get as a result then there are ways to accommodate ribbon, hiding its problem and capitalizing on ribbon’s benefit. If you use nothing and have no well-defined objectives then what is the point to chew over empty recitations of rumors about technologies? I do not mean to sound rude but I see no tangible practicality in your commentaries.

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