Building the Cyclops (aka Poke Ball) Omnidirectional Speaker - by SoundBlab - YouTube
DIY parametric speaker
Project] Parabolic speaker | diyAudio
Building the dream Omni-Directional LoudSpeaker - MiniDSP
Extreme custom built active 4 way Speaker by Sparrowlegs. Using 3 unique one of a kind Omni-Directional spe… | Diy audio projects, Home audio speakers, Diy speakers
Directional audio speakers made from glass introduced - Inavate
Ultrasonic Parametric Speaker DEEP S22 - YouTube
Soundlazer "Snap" - The Directional Parametric Speaker by Richard Haberkern — Kickstarter
How to Make Ultrasonic Directive Speaker Circuit - Homemade Circuit Projects