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<blockquote data-quote="Jay Barracato" data-source="post: 92290" data-attributes="member: 24">Re: Cardioid Subs in a Smaller venue.Harry,As I understand the cardiod sub array, it relies on three factors:1. The delay caused by the physical spacing between the forward facing drivers and the rearward facing drivers. (Approx. 1/4 wavelength)2. The electronic delay added to the rearward drivers (approx. 1/4 wavelength)3. The polarity inversion.I would add that the subs themselves are important (as opposed to considering them as an idealized point source) because they act as a physical barrier between the air that the forward facing drivers act on and the air the rearward facing drivers act on.My idea is just that two drivers that are close together compared to the wavelength they are producing both act on the same mass of air creating a single wave which then propagates according to wave theory. If two drivers are far enough apart or have some sort of barrier between them that causes each driver to act on a separate mass of air, then two waves are formed, begin propagating, and then can interfere. An often repeated but completely wrong misconception I hear frequently is that the interaction of two waves at one point and time somehow changes the waves at other points.I would not suggest doing this in real life, but as a thought problem, could you set up an equivalent array with all three drivers facing forward, and the delay caused by the physical spacing replaced by the equivalent amount of electronic delay?</blockquote>

[QUOTE="Jay Barracato, post: 92290, member: 24"] Re: Cardioid Subs in a Smaller venue. Harry, As I understand the cardiod sub array, it relies on three factors: 1. The delay caused by the physical spacing between the forward facing drivers and the rearward facing drivers. (Approx. 1/4 wavelength) 2. The electronic delay added to the rearward drivers (approx. 1/4 wavelength) 3. The polarity inversion. I would add that the subs themselves are important (as opposed to considering them as an idealized point source) because they act as a physical barrier between the air that the forward facing drivers act on and the air the rearward facing drivers act on. My idea is just that two drivers that are close together compared to the wavelength they are producing both act on the same mass of air creating a single wave which then propagates according to wave theory. If two drivers are far enough apart or have some sort of barrier between them that causes each driver to act on a separate mass of air, then two waves are formed, begin propagating, and then can interfere. An often repeated but completely wrong misconception I hear frequently is that the interaction of two waves at one point and time somehow changes the waves at other points. I would not suggest doing this in real life, but as a thought problem, could you set up an equivalent array with all three drivers facing forward, and the delay caused by the physical spacing replaced by the equivalent amount of electronic delay? [/QUOTE]

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