Passive Cardioid Technology | Fulcrum Acoustic
Do-It-Yourself Cardioid Sub
Patent Review: Passive Cardioid Speaker | audioXpress
Cardioid Sub Workshop | Inline Gradient - YouTube
IVS audio – Second order cardioid subwoofer
Hybrid Cardioid Speaker | diyAudio
Cardioid Bass.... yes, very good!! | diyAudio
Ground Sound
Gainphile: S23 - Active Cardioid Loudspeakers
Ground Sound
Waveguie and Cardioid on a Slim Baffle | diyAudio
Cardioid calls
Kii Audio announce the innovative Kii SEVEN Wireless Music System - Audio Media International
Cardioid calls
Hybrid Cardioid Speaker | diyAudio
Acoustic Cardioid
Has This Company Solved The Problem Of Bass Leakage In Loudspeakers?
How to correctly position multiple Subwoofers for Cardioid Deployment - Live Sound
Help with understanding “acoustic cardioid midrange” in this speaker : r/diyaudio
Patent Review: Passive Cardioid Speaker | audioXpress
Simple Cardioid Sub Setup - YouTube
What are cardioid speakers?
How to correctly position multiple Subwoofers for Cardioid Deployment - Live Sound
SXC118 | 18" High Performance Cardioid Subwoofer
QSC Introduces K Cardioid Single-Box Powered Cardioid Subwoofer | audioXpress
Passive Cardioid Technology | Fulcrum Acoustic
