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PURIFI finally did a fully purified passive speaker design! The SPK 16 prototype is here - with a PTT tweeter
- Thread starter DTTOM37
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Where are those sharp edges you complain?Finally someone who takes edge diffraction serious!
So manny speakers have sharp edges (like these great new KEFs - the best Coaxes with Genelec Ones) - it simply makes no sense ...
Here: https://www.audiosciencereview.com/...lby-atmos-surround-speaker-review-jpg.284333/
And here: https://nl.kef.com/products/r3-meta
Was talking about KEF - Genelec does SO MUCH right with these designs.
And here: https://nl.kef.com/products/r3-meta
Was talking about KEF - Genelec does SO MUCH right with these designs.
Mario Sanchez
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I would also like to add that KEF has a much larger part around the tweeter built as a fixed "cup" rather than part of midrange diaphragm compared to usual coaxial designs, which may have helped alleviate the on-axis scrap we see so much on co-ax drivers. They probably patented this as a part of the tangerine waveguide though.Since the 8th generation of the KEF Uni-Q this is achieved on the upper treble with its tangerine waveguide.
What Is Uni-Q Technology? | KEF UK
Explore KEF's Revolutionary Uni-Q Technology, providing unparalleled audio precision to deliver immersive sound experiences for your home.uk.kef.com
We might be getting a bit ahead of ourselves here, but if purifi were to make a co-ax I think they may need to use a non-ribbed surround on the diaphragm for, well, maintaining a smooth profile for the waveguide, and that could have some less-than-optimal performance implications on the mid driver, so there'll definitely be more challenges along the way than singular driver(s).
They have been teasing this tweeter for a long time now. Good to see something tangible finally!
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IMO the only real effect of wide top octave dispersion is expansion of the sweet spot. Reflections aren't really an issue due to air absorption and head shadowing. But the direct sound is more consistent across a wider area, hence the wider sweet spot.
Can you point me to that Harman research? After all, some of their most popular monitors (JBL 7-series) have wide and constant dispersion through the top octave. They do poorly on the "preference score" as a result, but Harman obviously released them anyway.
This tweeter looks really impressive. Honestly it's the first since the aforementioned JBL 7-series driver/horn that has my attention as a real potential advance of the art.
Wut?
Penelinfi
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So what?
Sokel
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About the downward sloping, what we see in that preference Harman curves is not a target but a result as Dr Toole repeats again and again.
And makes sense,only the air absorbent over distance is enough to justify that result.
It's wrong to deliberately aim for that as a target.
Penelinfi
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theREALdotnet
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March Audio have a new speaker, too. It appears to use the same mid-woofer as this SPK16, but the tweeter from the Sointuva. March speaker cabinet radii are smaller than those on the SPK16, but there is some resemblance.
the sointuva doesn't even come close to how wide this radiate.
Does anyone know why Purifi didn't bother with the screws being flush?
Needed more diffraction.
Likely because it's only a prototype.
Penelinfi
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The Ukkonen looks like it uses an 8 inch Purifi woofer.
The SPk16 uses the 6.5 inch woofer; also mentioned multiple times in the article.
I think that tweeter waveguide may be smaller on diameter than the SB Acoustics one
Right, forgot about that one, however surely its not that easy to copySince the 8th generation of the KEF Uni-Q this is achieved on the upper treble with its tangerine waveguide.
What Is Uni-Q Technology? | KEF UK
Explore KEF's Revolutionary Uni-Q Technology, providing unparalleled audio precision to deliver immersive sound experiences for your home.
