Conceptual drawing of a directional parabolic speaker. | Download Scientific Diagram
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Building the dream Omni-Directional LoudSpeaker - MiniDSP
Building the Cyclops (aka Poke Ball) Omnidirectional Speaker - by SoundBlab - YouTube
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Build a Parabolic Speaker : 9 Steps - Instructables
Parametric Speaker Test - YouTube
Analogue Directional Speakers: How to Make and Test Different Types of Parabolic Reflectors? (TfCD) : 10 Steps - Instructables
DIRECTIONAL SPEAKERS - YouTube
Homemade Omnidirectional Speakers In A Unique Enclosure | Hackaday
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Umbrellas as Parabolic Speakers – Zach Poff
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Ultrasonic Sound Gun (Parametric Speaker) : 3 Steps (with Pictures) - Instructables
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How to Make Ultrasonic Directive Speaker Circuit | Homemade Circuit Projects
