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Mind the gap - Part IIIn part II of this series of articles I will elaborate on my preliminary findings about the possibly beneficial effect of introducing gaps between adjacent enclosures in cardioid stacks and arrays.

Mind the gapA short time ago I was very fortunate to have gained access to a former air force base featuring ample real estate with a solid underground.

An ideal environment for subwoofer measurements where I got to measure all typical inverted stack cardioid setups.

And while I’m still in the middle of processing all data, I would already like to share one preliminary but potentially interesting observation.

Hypothetical questionfigure 1I can tell from my seminars that the impulse response remains an abstract to many. But, if you think of the impulse response literally as a track in a DAW, it might come more naturally in the future.

Which sub to reverse? Part 2In Part 2 of this series of articles, we discuss the trade-off for trying to achieve maximum coupling in front of a ground-stacked cardioid setup by reversing the bottom subwoofer.

Which sub to reverse?Which subwoofer to reverse in a vertical ground-stacked (half space) cardioid setup remains eluding. We all know that the physical displacement of the speakers with respect to the floor determines whether we remain coupled and therefore efficient.

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