Seems very promising as it truly is the only speaker that attempts cardioid radiation pattern but at the same time doesn't force itself to be full range.
Every other such design basically houses a dedicated subwoofer in the same cabinet and that doesn't seem that good of an idea. Certainly my dedicated sub will work better below 80hz anyway so speakers like D&D 8C or as of yet unreleased GGNTKT M3 try to serve me something that I don't need. Manta also has lower distortion than competition.
That would make Manta the most logical choice, only few things that concern me is the early tweeter roll of and its potential compression. Horns as used by GGNTKT make me more confident since those I know can play really loud without problems.
Any desire to go with black instead of silver screws for the drivers? They stand out to me and make the speaker look cheap IMO.
That is really nice looking. I am surprised that the insulation in the speaker allows the sound to escape enough to get the cardioid effect. I know when I block my ports, it doesn't seem to allow any sound through. I would be more curious to understand. Or maybe I am just not seeing the photo correctly.
Out of interest, will they come with grilles?
In other news, the new prototype has got revised side ports, especially the lower chamber has significant adjustments. Measurements have only been done indoors so far, so this won't tell us energy loss in absolute numbers due to reflections. What we can do is see the difference between the previous and the new prototype. Something is clearly going on from 150hz and below that looks very interesting.
Green is on-axis, red is 180 degrees on the old prototype, and blue is 180 degrees on the new / current prototype.
That's really impressive, is that in-room or open-air? When does the cardioid dispersion start cancelling off-axis? Are you going for a wide angle, like most coax (70+ degrees) or more narrow like the Kii series' (60 degrees) studio oriented design?Obviously early days and lots of work left, but here's preliminary on-axis + 30 degrees off-axis with the new enclosures.
(0,5m in door measurement)
That's really impressive, is that in-room or open-air? When does the cardioid dispersion start cancelling off-axis? Are you going for a wide angle, like most coax (70+ degrees) or more narrow like the Kii series' (60 degrees) studio oriented design?