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.  

fleschler

@coralkong 

Put the multimeter down and try listening with your ears. You might be amazed at what you discover.

This is what irks me immensely.  Why on earth do you weaponize one of the main things we have in common?  The enjoyment of music?  Do you really think we don't listen to music?  That we don't use our "ears?"  Why build cheap/false talking points like this?  If you have a logical, technical argument, make it.  But for heaven's sake, don't resort to cheap shots like this. 

That aside, half of my reviews involve listening tests.  That is about 150 reviews a year which dwarfs any other reviewers out there. And of course any audiophile.  So don't tell me to listen.  I do and I know the limitations of that task for evaluating audio gear.

And we all experience what you do: the falsity of changes that are not real.  I have done AB tests of the cables sighted just like you do and reported those outcomes in reviews.  They are worthless and I indicate it as such.  And I note often how the cheap generic cable "sounded better."

So please, in this informed discussion, leave aside lines like this.  

@amir_asr , if you go back and look at my posts on ASR I felt the same way, you were flip and taking cheap shots. Now, I agree not to take shots about your listening skills, tin ears, etc. You need to agree not to take cheap shots about listening experiences of others, it is irksome both ways. I don't even want to bring up your toilet and fart jokes, ugh.

@amir_asr "Do you really think we don’t listen to music?”using your own jargon, what “irks" me is a claim as you are able to distinguish in your listening tests between 0.001% and 0.005% THD sources, employing ~5% HD speakers, and unknown real load HD amp.

Many people here say as actual "A” SQ quality is better than “B”, even if setup “B” includes lil better measured standalone component, assuming integrated system performance. audio system to check should include actual components, interconnects, components match, and room acoustics.

@westcoastaudiophile +10 Even his own member Mr. Hooper/Prof chooses and inferior distortion unit A over superb measuring unit B component (CJ versus Benchmark L4) for it’s possibly easier to listen or enjoy in his system. Personally, I think that is quite an extreme example of difference in sound, like the difference between the COS Engineering DV1v and DV2v DACs. Different presentation of music. (The latter two probably measure nearly the same though, they are so similar in construction, just D1v has twice the parts power section and chip count).

I could tell a CJ pre-amp or amp from super clean measuring solid state units, but not .0001% versus .0005% distortion.  Not even .1% from .0005% or probably 1% at 1Khz from .0005% at 100 db.

As for the topic of "blind testing" it just isn’t necessary or practical. Look, I drop a component in the rack and let it break in for a few weeks. I take it out before the 30 day return period expires. If I can’t tell a difference send it back. If my face freezes in "grinrictus" I leave it in. The people who argue about blind testing are just using it as a crutch to win an argument.

Well even in medicine the use oof blind/double-blind testing is standard.
So the witch doctor can cure quite a bit.

these stories have almost practical way to repeat themselves. How would Flescher’s neighbour know whether one needs a power cable or IC or fuse? It becomes a mishmash or trail and error to arrive at some nirvana, and it is not even clear that the sound is ni fact changed or not. It reads more like a story.

If those cables seem to make a difference, then do we believe that they will measure electrically different or not?