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RE: Down-Firing Straight Edgar Style Mid/Bass Horns

It's nice to see that my design ideas are still appreciated. The bottom exhaust design has been a staple of mine for years now with the slimline, slimline signature, horn sub, and the monolith, published in Speaker Builder. The bottom exhaust makes the horn into a near field speaker, a feature that allows even my horn sub to work in a normal sized room.

I have investigated the wave propagation aspects of the design and found out that that wave front loses coherance about 500-600 Hz which makes it easier to crossover to a mid above 600 Hz. I see Ed uses a 550 Hz tractrix horn of mine for the mid. We will need to get the system measured to see how well the blending works. I have suggested to Ed that we write a joint article on the design for Linear Audio. The editor has requested loudspeaker articles from me but I haven't been able to deliver because of health problems. This project would be a good start.

Bruce

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