Sorry but im not probably between 55dB, you are probably much higher, at SPL 55dB the fletcher curve still affect to much.
You probably are between 80 and 85dB. Nobody are going to gives you a 65dB measurements... You are going to recreate smartphones spl level to make the canton looks better?
Yeah and the same distortion from the article, are also one of the highest %, in this price point speakers tend bo be low distortion at this price point.
Even the ls50m is at 0.1% at 3khz.
The R and the reference have better thd at any SPL level, not only in high spl. Distortion graph can be readed in multiples ways, these speaker will play cleaner. Lower distortion+better overall cabinet+drivers mounting. Both speaker have their coloration the R and the Canton reference, the neutral speaker is the reference from kef.
having higher distortion, worse Fr/directivity (at least you never touched the direcvitity mess, yo are never going to get a neutral sounding with a directivity like that), plus you shared measurements that clearly show the reference have more a U Fr than a neutral FR, far away of what a neutral speaker sounds like, why these kind of stuff is in the kef reference tier?
Reviwers tend to say the cantons colorations is a kind of V or U Neutral FR, wich is not neutral.
So only because you buy the speaker that make them better? Even having the 9K you cannot detect the highly coloration man. And you insist as describe them as neutral.
So we got:
Weird mid range design that end in Higher mid-range distortion vs competition at this price. Ref 7K
Bad directivity for its price. Ref 7K
Because of the direcvitity, we got even more coloration , i still dont get why you point these as neutral speaker. You even share your not-neutral measurements and still thinks its neutral
There is no single objetive point for being comparable with the reference from kef.
Is more like you like the R coloration or the canton ref coloration?, some of them will prefer the kef R coloration(a bit too smooth in the top end and some extra pressence in the treble), that being said the R series sells a lot more than the cantons.
The R7 weight 31.4 and its something between the 8k and the 7K. These speaker are in the same tier even the weight is similar, but the reference is a flawless 50kg speaker, and also measures better Than the R and the reference.
Measurements are the real history and worth the effort for make these "tiers" of performance by its measurements.
If is not on the measurements is just your imagination.
Of course rooms tend to change much more the sound of speakers.
A hifi speaker with a little "U" FR tunning is desirable (not an exaggerated V shape of course) because that way:
1. you can tune the bass level to your room. If you have a large room you need more base level as the bass requires a lot more power than the other frequency ranges and you will have more air and less room gain. If you are in a small room you just lower the base level by using an sponge to cover the bass reflex port. That will give you a near flat bass response.
2. treble has a lot more directivity than mid range and bass. You need a higher treble level (2 or 3 db more) if you want a flat response at listening point. That can be of course fine tuned just by toe in the speakers. If your speakers are dead flat, or have a lower treble output you will end with a dark sounding system at the listening position.
You will want a flat speaker response mostly on studio or near field monitor speakers or headphones. Not Hifi home audition oriented speakers. That is why most high end speaker series have U shape the FR curves. Of course there are some brands that exaggerate this too much (B&W or Sonus Faber are typical examples) to sell "exciting" sound on stores. That is not the case with the Canton's Reference Line.
You are confusing "coloration" with FR. Coloration are changes on a natural instrument's tone introduced by mostly box resonances or driver/crossover defects. Coloration makes instruments sound unnatural (Kefs R are very unnatural (or artificial) sounding speakers). FR curve tuning does not produces that defect. When a speaker produces "coloration" a given note on the instrument or voice loses its original frequency and ends with a somehow detuned sound. FR curves don't affect instrument tunning, only affects SPL levels at different frequencies. In other words, you can fix FR curve just using an equalizer, speaker positioning, sponge, etc. You can't fix coloration without modifying the speaker itself.
If you have the opportunity to hear Kef's R series speakers and Canton's Reference you will know that the R series are far cry on tonal accuracy and rhythm precision. Actually the same day I purchased the Reference 9K my first attempt was to buy an R3 or R7 pair based on objective measurements. Those were a big disappointment. The Kef Reference (I tested the Reference 3 model) was a completely different story. They are great speakers, of course they are better than the Canton's. But I was evaluating price/performance not just performance at any price level. I found the R series artificial and unnatural sounding and wouldn't buy a pair at any price. Monitor Audio's Silver 7G series are a lot better on tonal accuracy than the R series too BTW but have other sound defects.
Regarding the SPL level. If you listen at safe combined (L&R channels) SPL level on the listening point, your per speaker output will be lower as the SPLs for both channels sum up.
Kef's better THD at any level is true, but, as I said before, on a real listening test (65 db level) that THD difference in measurement, in practice, does not have importance in effective sound quality. Looks like you didn't understood (or saw) the Canton's THD measurements at different SPLs that I posted previously.
Finally, regarding speaker....weigh??? you are saying that because a speaker weights more is better? So, you can make an iron case speaker that will weight 500 Kgs and because of this weight it will sound better???? are you familiar with open baffle designs?
Absolutely NOT. You want a speaker box that is correctly damped, so it can absorb resonances, and want a box that has minimal parallel surfaces reflecting and coloring the sound. The Kef's R box is well damped but it is a traditional parallel box and that effectively makes the speaker sound artificial. Kef's own LS50/Meta sounds much more accurate. That why LS50s together with Reference and Blade series are Kef's "reference grade" speakers and R series is not. The Canton's box is a multilayer absorbing material box, and its sides are curved so no coloration. I.e. they produce a very natural sound. And that is not directly related with weight.
I really don't understand why you are trying to undermine the Canton's Reference line if you have never heard a pair of those speakers. I consider myself brand agnostic. If the product offers a good price/performance ratio and the performance is at the expected level, I will buy the speaker that provides the better value. On all my years buying hifi audio products I have learn that objective tests are good but actual product experience is better. Objective measurements help you to rule out fundamental and mostly easily audible, product flaws, but what you can actually hear as a "better sound" has far more variables that what you can represent with traditional standardized measurements. Disclaimer: I am not saying that you can't measure those differences, I am saying that standard measurements can't and, also, saying that not all measurements have the same importance. For example, can you hear the difference between a SNR of 130 db vs a SNR of 100db??? yes the product that measures 130 is better on that parameter that the 100 db, but do you know if the 130 db product actually sounds better just but judging it based on an inaudible difference?
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