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Worst measuring loudspeaker?

They only sell to those with hearing impairments?
WOAH THERE!!!

My hearing is impaired to the tune of a similar but smoother dip in the mid kHz (I have the graphs taken but too embarrassed to post them). I can assure you that despite my issues, my receptiveness up-top seems to be minimised by good lateral dispersion to fill-in the affected frequencies. I can't afford to investigate further with a different speaker choice, but boxes like these Zu's with the massive errors in the mid kHz region, simply wouldn't work at all and the remaining top above the dip, looks to be suitably ragged too.

Bonkers firm making bonkers products and a similar fanbase I suspect to the ghastly Lowther-based speakers over here (don't these 'enthusiasts go to live concerts with unamplified instruments every so often?)
 
It’s one thing for those of us here to adopt certain measurement criteria to guide our own purchases.

I don’t think it’s a great look to use it to denigrate the choices of other audiophiles who like something different,

When it comes to loudspeakers, there’s all sorts of factors that can lead to somebody’s personal choice. As I’ve noted in previous threads.: Not all Zu owners just mindlessly purchase their speakers. Plenty of owners have been audiophiles for a long time, have heard a wide variety of loudspeakers, have also owned many loudspeakers against which they are comparing Zu, and in the end they preferred how their music sounded through their Zu speakers.

If their Zu purchase has led them to great satisfaction, listening to their favourite music through those speakers (and enjoying the aesthetics), it doesn’t mean they “have no brains.” They’ve made a successful purchase.
But Zu’s success is also due, at least in part, to the failings of the mainstream audio press. I was the proud owner of a pair of Zu speakers (powered by a NAD integrated amp) before discovering ASR. I could hear enough to know that they were not world-class speakers, but I just assumed they were decent for the money (if not an amazing bargain, as so many reviews claim when reviewing this brand). I felt like an audiophile INSIDER who was in on a secret that no one working or shopping at Best Buy knew about. In short, I bought all the hype, because I didn’t know a different perspective existed. While I am still a bit annoyed by the people on this site who think listening before buying is pointless, and measurements are ALL, I do now have a much broader and deeper understanding of what good loudspeaker design is (in all its varied forms) and can hear the very real improvements in my current all-active KEF system.
 
But Zu’s success is also due, at least in part, to the failings of the mainstream audio press. I was the proud owner of a pair of Zu speakers (powered by a NAD integrated amp) before discovering ASR. I could hear enough to know that they were not world-class speakers, but I just assumed they were decent for the money (if not an amazing bargain, as so many reviews claim when reviewing this brand). I felt like an audiophile INSIDER who was in on a secret that no one working or shopping at Best Buy knew about. In short, I bought all the hype, because I didn’t know a different perspective existed. While I am still a bit annoyed by the people on this site who think listening before buying is pointless, and measurements are ALL, I do now have a much broader and deeper understanding of what good loudspeaker design is (in all its varied forms) and can hear the very real improvements in my current all-active KEF system.
I agree about the need to confirm that the speaker dispersion pattern suits the room it's in and the best way for (music for pleasure at home) is to listen to them in the given environment. My Harbeth speaker model sounds TOTALLY different in my pal's dem room, which is livelier than mine (i thought mine were faulty but they're not) and it taught me a very valuable lesson (far too late for my old career) in studying how dispersion/directivity will give a different sonic perspective depending on the 'untreated or over-soft-furnished'room they're to be used in.

But yeah, if our ears are the ONLY arbiter, then cr@p like this will still be sold and the more expensive it is, the more 'exclusive' it will be judged!
 
I bet you anything with a proper crossover network this would be a pretty alright speaker.
 
Except when, like me, you actually know someone who was taken in by their marketing and is now stuck with expensive speakers he doesn't like.
Zu offers a 60-day money-back guarantee. So apparently the speakers sounded good enough for 60 days.
 
As i mentioned in the Zu thread, the new standmounter from Borrensen Audio seems to belong in this thread judging by the latest HiFi News review.
I can't find that review ...
 
Zu offers a 60-day money-back guarantee. So apparently the speakers sounded good enough for 60 days.
I don't know why he didn't send them back. There are conditions on that 60 day return, it isn't a 'no quibble' policy. Also they have a custom finish, and we are in the UK, both of which may have a bearing on that.
 
I can't find that review ...


(30 dB scale - looks worse than it is. Still bad though. ;) )
Skärmavbild 2025-08-09 kl. 12.13.31.png


4% THD at 10 kHz (90 dB SPL / 1m) as well...
 
I suspect that Zu and Borresen and their ilk get by on the Emperor's New Clothes syndrome, whereby they get good reviews, (without measurements) from those who want to appear 'in the know' which is then picked up by punters who again, feel somehow superior that they can appreciate their (doubtful) qualities.

There are several others who play the same game, selling stuff that's frankly horrible, or very ordinary and hugely overpriced to those that don't know better. So called 'influencers' are now a plague on all consumer products.

As long as scepticism and critical thinking isn't taught in schools from Day 1, we're doomed to fall prey to such behaviour in every field.

S.
 
they get good reviews, (without measurements) from those who want to appear 'in the know' which is then picked up by punters who again, feel somehow superior that they can appreciate their (doubtful) qualities.

Don´t fall for such simple explanations. Even if their flaws are indisputable and I personally don't like both of them, we should get used to the idea that a surprising number of buyers simply likes the sound and finds enjoyment in their speakers either sounding ´super silky, never annoying´, or ´rough, direct, dynamic´. One might argue that both variants are not high fidelity from technical point, but people seem to like it.

As long as scepticism and critical thinking isn't taught in schools from Day 1, we're doomed to fall prey to such behaviour in every field.

I don´t think it needs to be taught. Critical and scientific thinking would in my understanding be more popular if people's needs, goals and experience would be taken more seriously, and if whatever fact-based development is behind products, would more obviously bring people enjoyment.
 
Don´t fall for such simple explanations. Even if their flaws are indisputable and I personally don't like both of them, we should get used to the idea that a surprising number of buyers simply likes the sound and finds enjoyment in their speakers either sounding ´super silky, never annoying´, or ´rough, direct, dynamic´. One might argue that both variants are not high fidelity from technical point, but people seem to like it.



I don´t think it needs to be taught. Critical and scientific thinking would in my understanding be more popular if people's needs, goals and experience would be taken more seriously, and if whatever fact-based development is behind products, would more obviously bring people enjoyment.
The majority of buyers haven’t heard a really good speaker and wouldn’t recognise one if it called out their name.
Education is key.
Keith
 

(30 dB scale - looks worse than it is. Still bad though. ;) )
View attachment 468799

4% THD at 10 kHz (90 dB SPL / 1m) as well...

Cripes almighty !!

And in the measurement section they begin with sentence that I can only imagine was written with a flushed red face of embarrassment:

“ clearly a flat, uniform axle response is not always critical to the “ subjective experience.”

While there is some truth to that (in the sense that some people can still enjoy speakers with some colorations) … in this case it comes off to me as a sort of hand wavy excuse for being embarrassed by the measurements. I’m not impressed that the reviewer did not seem to notice frequency response errors of that attitude, and mention them in the review. (whereas the subjective portion of some other Børresen speakers with similar response did mention them).
 
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The majority of buyers haven’t heard a really good speaker
Yet this is clearly not the case for the many experienced reviewers who nevertheless praise highly flawed speakers. And I believe that they are most often quite sincere about it.
 
Yes, the reliance on logic/reason alone, with no recourse to empiricism at all (aside from sighted listening in some cases). The same archaic approach to thought that led Aristotle to claim that, since men are larger than women, we therefore have more teeth than our sisters.
IMO, we have:
  1. Rationalism
  2. Empiricism (including its favorite child, science)
  3. Intuition
  4. Faith
  5. Authority
These are the classic "Five Ways of Knowing." "Ways of Apprehending Reality and Unreality" might be a better way to put it. We need numbers 1 and 2 to judge audio accuracy, pleasingness, etc. Every proposition can be seen as Truth + Error, where either Truth or Error can range from 0 to 100%, but, as we know, measuring, rating, or ranking the Truth or Error is full of pitfalls.

How many of you have found that your equipment can sound different at different times, with the same program material, the same listener position, lighting, etc.? Is it temperature, humidity, warm-up time, what was played just before, body weather, mood etc.? Maybe it's the equipment that has moods.

And, yes, I think empiricism should include Double Blind ABX tests, but some creativity needs to be used to answer objections; yes, if your brain is in a "judging" mode, you may perceive music and its reproduction differently than if you are relaxed, and are just letting the music wash over you. This calls for different and more comparisons. You may need to use some of the strategies in the statistical recommendations of the American Psychological Association Publication Manual: Effect sizes, confidence intervals, and meta‐analysis. I think it is in its 6th edition.

Whatever opinions of experts, designers, dealers, manufacturers, and critics are sailing through the zeitgeist may provide us with the earplugs of authority. We may read (over and over again, since the AR 3 hit the market) the fallacy that flatness of frequency response = "accuracy." We may be able to thank Consumer Reports magazine for that one. Yes, the AR1, 2, 3, 3A all had a lot of bass, and probably reached lower than many huge speakers. Consumer Reports rated it higher than any other speaker. Most of my friends who went to the Hi Fi Fair thought it lacked openness, detail, was muddy, and did not have much dynamic force, despite all that bass. The rest of us were distributed between the JBL Paragon, the huge EV Patrician, the Klipschorn, the Altec A7, and the like. Naturally, none of us could afford any of them. Some of us went to a friends house to hear his cheap EV horn set-up in enclosures he built. Just as at the fair, now brass sounded like brass,
With the authority of Consumer Reports in play, brass wouldn't sound like brass, at least to us. In later years (about 50), we liked horns, ribbons, and some others.

But, while I would like frequency response to be as smooth as possible, everything else being equal or near equal, in a given instance, I might find low distortion, including IM, to be even more important. That 19 dB dip in the Zu is fairly narrow (compared to some) so I don't know.

Solution: listen, for a few hours, on different days.
 
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As i mentioned in the Zu thread, the new standmounter from Borrensen Audio seems to belong in this thread judging by the latest HiFi News review.
And IIRC they gave it an Outstanding Product award. :rolleyes:
 
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I think these are the worst speakers I have ever measured or better these are the worst speakers in terms of measurements.
I should also have the REW files somewhere.
 
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