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Not yet... working on it

The rear-firing tweeter on the Prisma is compensation for the rectangular front horn's radiation pattern, which is narrower in the vertical plane than in the horizontal.

When I match up the horizontal radiation patterns of the woofer and horn in the crossover region, the reverberant field is "cheated" by the rectangular horn's narrower pattern in the vertical (which isn't necessarily all bad, as it reduces floor and ceiling interaction, and allows closer vertical center-to-center spacing of woofer and horn). The rear-firing tweeter adds just enough energy to the reverberant field to make up for the shortfall. The critical timing cues, as far as imaging goes, are all in the first-arrival sound.

Adding an essentially full-range rear-firing (or up-firing) section is a somewhat expensive proposition, both in drivers and in cabinetry. I've explored several driver options and settled on a part custom, part off-the-shelf solution which should allow me to do a Two Streams floor-stander in the same general price ballpark as the Prisma. It will have enough adjustability that against-the-wall placement will be feasible, and maybe even corner placement.

Duke

Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.

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