New Kuoro Speaker

FBO wrote:
Hi Alan,
I heard the Kuoro through your video from the show. Sounds great. In bass you reached the same impression of big clean sound as on the Ukkonen. Difficult to juge the trebles with the video. I suppose clean of course. On the video it is possible to compare the size Ukkonen Kuoro.
Nice speakers the Kuoros also for a smaller room!
Impatient to hear from the price and your feedback for the tweeter PTT or SB choice.
Good impacts with the P801. Clean.

Why don’t leaving the choice to the costumer by the way? Alu or Beryllium. With a possibility of simply upgrading later.

FBO wrote:
Why don’t leaving the choice to the costumer by the way? Alu or Beryllium. With a possibility of simply upgrading later.

I suppose the question is "what is an upgrade"? Which is better, the SB Acoustics or the Purifi tweeter? 😀

We had very informative and interesting reactions from listeners at the show.

I can't really go into detail at the moment, sorry.

Alan March wrote:
I suppose the question is "what is an upgrade"? Which is better, the SB Acoustics or the Purifi tweeter? 😀

We had very informative and interesting reactions from listeners at the show.

I can't really go into detail at the moment, sorry.

Gauder Akustik in Germany a great speaker manufacturer, I suppose you know by reputation, I heard the astonishing Capello series with a very good sound, offers the possibility to upgrade from alu to beryllium for the tweeter. The upgrade from alu to beryllium costs 5000€! For both tweeters…. Have a look on their website.

The difference between alu and beryllium is the distortion at higher levels. With your Ukkonen I can turn louder with no harshness. This is what I heard on the GA Capello speakers alu vs beryllium also. The sound is precise and smooth.

Yes what is an upgrade is a part of my question.
For me the precise fine sound without harshness on the listenable frequencies the rest going up to 40 kHz is only possible with beryllium. If purifi managed that with alu…perhaps because they managed so many things… I’m looking forward to your choices when you will be able to write about it and give the impressions of the listeners.

There’s a mixe up between your Kuoro red and Akkunen blue speakers on these videos. Certainly, because this guy saw your red Akkunen on videos before.

I told the guy.

I would caution everyone from drawing any conclusions about sound quality from recordings made in this way.

They are simply nothing like the real sound. Microphones do not "hear" in the same way as two ears and a brain. The mics pick up all the room reflections and sound whereas your brain will filter much of this. This is especially the case with omni microphones as appear to have been used here.

Ever experienced the cocktail party effect? Its a really noisy room, music and conversations, yet you can focus on one person's voice and hear what they are saying. If you tried this with a microphone you would really struggle to hear the conversation.

Hence these recordings sound terrible. Yes the speaker names are mixed up.

FBO wrote:
Hi Alan,
Great news the Kuoro! Congratulations again. Is it smaller in size than the Ukkonen?
It will be very interesting to have the feedback, because for me it’s hard to get over the SB Satori… béryllium so smooth and precise. The purifi is made of what?

The white paper from Purifi states that the tweeter dome is Aluminium, which gave the best results during testing/ designing.

Apparently, there is a big woofer announced in Munich 2025. Purifi. Dali of course.

Any further news on the release date for the new Kuoro yet?

Paul7777x wrote:
Any further news on the release date for the new Kuoro yet?

We had some great feedback from visitors to the Australian hifi show. We are actually having an interesting discussion with Purifi regarding optimisation for the tweeter design, so we are not going to rush this one out.

Will keep the forum updated.

Btw, is this what you had in mind when you christened your flagship loudspeaker?

Alan March wrote:
No, wont go as low, but the Ukkonen is exceptional and unique in this respect.

Alan March wrote:
No, wont go as low, but the Ukkonen is exceptional and unique in this respect.

Alan March wrote:
No, wont go as low, but the Ukkonen is exceptional and unique in this respect.

Iirc the Ukkonen uses dual(?) Purifi passive radiators. the ultimate without using much larger drivers that would need much larger boxes, and even then probably only at very high SPL

A slim slot port I’d think won’t go as deep - though if(?) the drivers are the same in the upcoming model, the bass above the frequencies where the PR/s and port generate output should be identical. If other things are equal (?)

is that correct?

Rick57 wrote:
Iirc the Ukkonen uses dual(?) Purifi passive radiators. the ultimate without using much larger drivers that would need much larger boxes, and even then probably only at very high SPL

A slim slot port I’d think won’t go as deep - though if(?) the drivers are the same in the upcoming model, the bass above the frequencies where the PR/s and port generate output should be identical. If other things are equal (?)

is that correct?

The Ukkonen uses a slot port and 8" woofer, no PRs. We used PRs on the Sointuva because the port length would be difficult to implement in that small a box. It has a 6.5" woofer

The Kuoro used 2x 6.5" woofers. There are a whole bunch of parameters that change between the Sointuva and Kuoro.

Alan March wrote:
The Ukkonen uses a slot port and 8" woofer, no PRs. We used PRs on the Sointuva because the port length would be difficult to implement in that small a box. It has a 6.5" woofer

The Kuoro used 2x 6.5" woofers. There are a whole bunch of parameters that change between the Sointuva and Kuoro.

So, aside from possible differences in efficiency, which speaker produces deeper bass? Kuro with its 2x6.5" woofers or Ukkonen with its single 8" driver.

Which has greater power handling?

@Alan March?