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RE: Dragonfly

Posted by Robert Bastani (M) on September 11, 2008 at 21:47:07

In Reply to: Dragonfly posted by Roy Lewis on September 10, 2008 at 13:01:43:

Hi Roy,

the DF design is made to get maximum fundamental and dynamic basses out of a slim speaker. It isn`t a "classical" horn- design, DF offers much more fundamental basses than other compact horn- designs using drivers of similar size, this design can`t be calculated with existing formulas.
DF is a floor firing- design, also a solid rear- wall is needed to couple the horn- mouth to the room, so the virtual part of the horn- mouth is big compared to other horn- designs. To tune the "system" of speaker in- room to a low frequency results that differences in sound provided by differences in the physical and virtual hornmouth- area are small. The design of the DF horn helps to compensate different room- geometries and placements by "built-in" modifying the size of the virtual opening.
In opposite to the mouth the exact size of the throat of the DF design is extremely important, the closer to the driver the more important. This area is responsible for the proper function, a failure here can`t be compensated by modified hornmouth or placement.

Regards
Robert Bastani

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