Nearly all manufacturers do not advertise/exhibit their product measurements? Why?
After my Audio Science Review review forum, it became apparent that nearly the only way one can determine the measurements of an audio product is wait for a review on line or in a publication. Most equipment is never reviewed or is given a subjective analysis rather than a measurement oriented review. One would think that manufacturers used tests and measurements to design and construct their products.
Manufacturers routinely give the performance characteristics of their products as Specifications. Those are not test measurements.
I searched the Revel speaker site for measurements of any of their speakers and could not find any. Revels are universally lauded for their exceptional reviewed measurements. Lack of published manufacturer measurements is true for nearly every speaker manufacturer I've searched for on line, perhaps several hundred. Same is true for amps, pre-amps, DACs, transports, turntables, well you get the picture. Do they have something to hide? I doubt the good quality products have anything to hide but poor quality products do.
ASR prides itself in providing "true" measurements that will aid in purchase decisions. Why don't the manufacturers provide these measurements so that reviewers can test if they are truthful or not?
Then there are the cables and tweaks for which I suspect that there are inadequate tests available to measure sonically perceived differences but which objectivists believe don't exist or are "snake oil."
Well, please chime in if you have some illuminating thoughts on the subject.
I would have loved to see manufacturers measurements on my equipment and especially those that I rejected.
Please try to stay on topic..,,. The topic is “manufacturers and measurements.” It is not about marsupials, nor distribution of money made from dynamite sales.
or at least share with us what you’re drinking, in order to put the comments in context. |
Dear @fleschler : " However, the query remains as to why don’t manufacturers supply their own test measurements and depend on reviewers? "
Normally manufacturer specs are not a manufacturer " fake ", normally all them made measuremets test from those specs came. So, in reality no one audiophile/customer really needs those " measurements " to make his choices. Specs are important to know if a cartridge can be handled by my phonolinepreamp gain or if the weigth/compliance cartridge specs could mate good with my tonearm. Same when we are trying to mate speaker/amp where at least we need to know the speaker sensitivity along the amp rated power speaker nominal impedance and speaker crossover discrete frequencies. What need we to know about any TT no matters its kind of drive? obviously its speed stability specs, there are other important TT specs around but the main one is that SS. When we talk about phono stages main specs are: inver RIAA eq. FR deviation, noise level, gain level and if it's a high gain active or passive design. When we need a SUT: FR bandwidth and gain are the main specs.
And we can go and go about. Almost all manufacturers give us their audio item specs that if we know to " read " it can tell us the quality level of the audio item design.
To have the charts of those specs do not helps me because you can make 3 times the same measurements with 3 cartridge samples or with 2 monoblocks amps or speakers or what audio item you imagine and you will find out that all the measurements are not exactly/accurated in between the same amp, speaker, cable, cartridge and the like.
So why to worry about? what we need is not measurements but SPECS.
Regards and enjoy the MUSIC NO DISTORTIONS, R.
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Yes, I mentioned many of those manufacturer specs which gives adequate information to mate equipment. However, cartridge frequency response test measurements are important to those who can easily ascertain the sound based on variance(s) from flat frequency responses. A Koetsu sound envelope is easily discerned from a Lyra and both from a Dynavector based on the test grid. This forum is directed more to the need for specs and measurements of cables and tweaks which are rare among high end products. Commonly used professional gear generally have in depth and ample specs based on manufacturer test measurements. |
Dear @fleschler : " specs and measurements of cables and tweaks which are rare among high end products. "
Yes, you are rigth because with cables there is almost no single spec. LFD cables has a very high tag price over 18K and a gentleman asked directly to LFD for some specific cable specs and the manufacturer posted: " the proff is in the lestening ", obviously that LFD has no single spec on it's cables or those specs are so wrong that they just does not disclose it.
On the tweacks exist a lot of " sneak oil " items as the fancy capacitors and several other audio items where the manufacturers always say " you can have an improvement/enhance " when there is nothing that can make a real enhance/improvement to the original sound signal, every additional step where the ignal must pass through the best that can do it is to " degrade " the signal but with no true improvement. Could sound different but not better.
Anyway, I get your point, R. |
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