Bonus: Part six, chapter7 of a  Subwoofer Series brought to you by the 
Editors of and Fulcrum Acoustic.
Passive Cardioid Loudspeaker Technology
An approach for maintaining directional control
Excessive rear low-frequency radiation from loudspeakers and subwoofers often presents a significant challenge to sound reinforcement practitioners. While some solutions have been devised over the years, they've not proven entirely effective, especially in larger applications.
 To address the problem, the engineering team at Fulcrum Acoustic developed an approach called Passive Cardioid Technology. It's a patent-pending method of maintaining a directional pattern .
This bonus chapter of the Subwoofer series,  provides an inside look at this new and still developing technology, focusing on:
  • Producing a cardioid radiation pattern
  • The roles of DSP and amplification
  • Maximizing efficiency
  • And more!
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"Passive Cardioid Technology evolved from listening to customer needs and directing our efforts toward satisfying those needs."
David Gunness, Fulcrum co-founder
About Fulcrum Acoustic:
Founded in 2008, Fulcrum Acoustic is a professional loudspeaker manufacturer known for its unique approach to loudspeaker design. Employing the research of company co-founder David Gunness, Fulcrum Acoustic combines proprietary coaxial design and Temporal Equalization™ processing power to create the most powerful and versatile line of loudspeakers available.
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