How do you calculate cardioid subwoofer spacing? (gradient array) @nathanlively
How do you calculate cardioid subwoofer spacing? (gradient array)  @nathanlively
Uploaded December 2021 | Updated September 2026, 1 week ago
One approach to space the gradient subwoofer array (commonly known as a cardioid array) is to center the region of greatest summation within its operation range.
1. Find the center of the operating range using arithmetic average. eg. "Hey Siri, what's the average of 35 and 100?"
2. Find the wavelength. eg. ฮป = c / Fc
3. Find one quarter. eg. spacing = (1/4)ฮป

This is an excerpt from my recent workshop: Follow the Sound System Tuning Roadmap
sounddesignlive.com/follow-sound-system-tuning-roadmap

For more on how the gradient array works: youtu.be/t-Ikv_uoLt0
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I love to geek out about the physics of sound. This channel focuses on the growing opportunity for live sound engineers to improve their confidence and consistency through the understanding of the principles of sound system design and optimization. My goal is to make this channel upfront and honest about my success and failure, so you can learn from both.

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How do you calculate cardioid subwoofer spacing? (gradient array)

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