Hello,
i randomly found Perlisten (never heard about them before).
They do publish measurements with their speakers.
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They do provide a spinorama (smoothed) which shows a very good directivity.
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This large speaker is bass shy which I guess is on purpose since they also sell subwoofers.
Horizontal directivity looks good. Vertical a bit less but still ok. I am not sure the 3 tweeters are improving the vertical much.
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Graphs extracted from here. The 15 inch sub has the following response:
View attachment 108149
I expect them to work well together. They also sell a center, a smaller tower and others subs. I have no idea of the prospective prices.
I always enjoy seeing an approach to speaker design that I hadn't seen before. Judging from that vertical directivity plot, the DPC-Array works well, doing just what it was intended to do. The horizontal directivity also looks good. In the vertical directivity you still see the familiar pair of "eyes" indicating the phase cancellation at crossover frequency and at specific angles above and below the horizontal plane. But these eyes are a good bit further apart, angularly, compared to most speakers. Conventionally, this would be done using very tight vertical spacing for the tweeter and woofer, and thus no waveguide, unless the waveguide is sort of squashed, vertically. This waveguide is like that, but still the overall shape of the DPC-Array assembly is circular, and the tweeter at the center isn't very close to the woofers. There is some evidence of comb filtering effect at higher frequency, but it is mild and most likely not audible. An interesting speaker for certain.