The interesting part in my experiments is not the forming of a cardioid pattern with two separate boxes, but doing the same with only one acoustic enclosure, and the space savings this allows. There's a lot of mutual interaction going on between drivers that are reproducing different signals.
Would the basic setup be back to back pairs with a delay and inverted polarity on the rear speakers, to get started?
Thanks. I forgot to mention that it would need a low pass filter on the rear speaker relative to where the front speaker starts to beam?
Yes, the rear driver's response needs to match what actually wraps around the cabinet. IOW, measure your target response at 180* while driving only the front speaker.
Using 2 boxes, spacing may be large enough that results are more about baffle size than beaming per se. Fortunately, you're currently working on engineering, not acoustical theory. 🙂
Using 2 boxes, spacing may be large enough that results are more about baffle size than beaming per se. Fortunately, you're currently working on engineering, not acoustical theory. 🙂
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