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

Recidivism.

@mitch2 @melvinjames @amir_asr 

Is this the 3rd or 4th now? So many nasty comments. Is it any wonder why the audiophile community at large is bleeding members?

@mitch2 , the system in your profile looks great, "he shoots, he scores" would apply here, no foul.

Thanks for posting it.

@dustyb123 

If you listened to 2 amps and liked one better but found out the specs on the one you didn't like were better would it change your decision?

It must not as long as a) you only used your ears and repeated the test a few times to make sure you are right and b) your listening tests were comprehensive enough to cover limitations of the amp.  For example, if you listen at low volumes, the amp may be fine but once you crank it up, it heavily distorts -- something the measurements show you.

Bottom line: listening test are the gold standard.  Just do them right.  That's all.

@kota1 

@amir_asr , I followed your instructions about having a friend switch cables to the letter, I have no idea what you are talking about when you say single trial, you said guess which cable is better 8 out of 10 times, I did that, duh.

Hmmm.  How did this test move from past to present?  Your claim of 100 hour burn-in was before we interacted at all.  Your original story about you liking that cable better said nothing about repeating the test, much less 8 out of 10 times.  You even wondered why I was asking you this.  Now all of a sudden that is what you did???

No worries.  Do you know how to shoot a video on your phone?  If not, get some help and redo the whole test so that we can see and observe.  And *please* watch the video I post on things you need to be careful of to generate reliable results.

@kota1 

BTW, it is not "we" talking about blind tests. When it came to the topic of cables I posted specs of the cables listed in my profile which is exactly the topic of this thread, a manufacturer listing measurements. I never said I "blind tested" them.

You didn't?  What was this then on page 6

@amir_asr , OK, thanks for sharing. The last time I did the test you just posted was when I auditioned a Mapleshade Digital Interconnect I had for a 30 day trial (about $250). After about 100 hrs of break in I "blind tested" it with my current cable and it was MUCH better so I kept it.

$250 is a lot of money to not know, or want to know if the thing really has an audible effect.