A musical instrument emits sound energy from several points at the same time, a series of coherent sound waves arrive at the listener's ear at successive moments.
With the Huygens principle, MDD technology transforms a point-like sound source into a series of sound sources that emit delayed and coherent sound waves. By maximizing acoustic diffraction, multiple transmission lines confine the wavefronts inward and emit delayed, coherent and omnidirectional sounds in the horizontal plane.
Transmission lines of different lengths optimize the frequency response, reducing the typical resonances of this type of speaker without damping material.
The first prototypes (439h, 419h and 227h) are visible on the website:
Claudio Gandolfi - MDD
My site is: Claudio Gandolfi - MDD
My current working hypotheses are described on the page acustica.
The last projects reported in the full range and planars-and-exotics section:
54m42 54m42 an MDD project (42 alveolar polypropylene wave guides on one driver)
other documentation is published at 54m42
34c9 Compact aluminum project
34c9 a MDD full range speakers.
https://www.claudiogandolfi.it/34c9.html
66c9 66c9 a low-cost MDD project (paper waveguide for educational use)
https://www.claudiogandolfi.it/66c9.html
22D7 Two drivers per channel for a 3D effect
22D7: four MDD systems for a 3D effect with omnidirectional speakers
https://www.claudiogandolfi.it/22d7.html
22M7 Simple and inexpensive wide-band rigid PVC project.
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-4.html#post6006473
other documentation is published at 22M7.
22C71L8 One driver per channel with waveguides applied to the two sides of the cone.
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-5.html#post6017746
other documentation is published at 22C71L8.
MDDHX135 an MDD project with the HX135 driver
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-6.html#post6124020
other documentation is published at MDDHX135.
MDD3FE25 an MDD project with the 3FE25 driver
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-8.html#post6170069
other documentation is published at MDD3FE25.
With the Huygens principle, MDD technology transforms a point-like sound source into a series of sound sources that emit delayed and coherent sound waves. By maximizing acoustic diffraction, multiple transmission lines confine the wavefronts inward and emit delayed, coherent and omnidirectional sounds in the horizontal plane.
Transmission lines of different lengths optimize the frequency response, reducing the typical resonances of this type of speaker without damping material.
The first prototypes (439h, 419h and 227h) are visible on the website:
Claudio Gandolfi - MDD
My site is: Claudio Gandolfi - MDD
My current working hypotheses are described on the page acustica.
The last projects reported in the full range and planars-and-exotics section:
54m42 54m42 an MDD project (42 alveolar polypropylene wave guides on one driver)
other documentation is published at 54m42
34c9 Compact aluminum project
34c9 a MDD full range speakers.
https://www.claudiogandolfi.it/34c9.html
66c9 66c9 a low-cost MDD project (paper waveguide for educational use)
https://www.claudiogandolfi.it/66c9.html
22D7 Two drivers per channel for a 3D effect
22D7: four MDD systems for a 3D effect with omnidirectional speakers
https://www.claudiogandolfi.it/22d7.html
22M7 Simple and inexpensive wide-band rigid PVC project.
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-4.html#post6006473
other documentation is published at 22M7.
22C71L8 One driver per channel with waveguides applied to the two sides of the cone.
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-5.html#post6017746
other documentation is published at 22C71L8.
MDDHX135 an MDD project with the HX135 driver
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-6.html#post6124020
other documentation is published at MDDHX135.
MDD3FE25 an MDD project with the 3FE25 driver
https://www.diyaudio.com/forums/pla...nidirectional-single-drive-8.html#post6170069
other documentation is published at MDD3FE25.
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