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

I'm surprised by the number of "data deniers" in this thread, some saying they prefer "just listening to music."  You can do both.  Attending to the technical can only make your enjoyment of the music better.  Such as by eliminating distortion artifacts, especially with analog media, such as vinyl.  (For cartridge & turntable science, note the 2nd edition of "Better Sound from your Phonograph" is out.)

So another of the ASR minions chirps off.

No one is denying data just that there are intangibles in audio also. Data is not the final determining factor. Also bad data, poorly executed measurements are meaningless. 

Must be repeatable and verifiable when it comes to measurements.

 


 

rcaguy

2 posts

 

I'm surprised by the number of "data deniers" in this thread, some saying they prefer "just listening to music."  You can do both.  Attending to the technical can only make your enjoyment of the music better.  Such as by eliminating distortion artifacts, especially with analog media, such as vinyl.  (For cartridge & turntable science, note the 2nd edition of "Better Sound from your Phonograph" is out.)

@rcaguy Welcome to Audiogon.  I read both of your new posts and thought they are well thought out.  Having both the expertise and equipment to make meaningful measurements to supplement your listening to a piece of equipment being considered for purchase is commendable. As you stated:

And for decades my policy was not to buy anything that did not publish meaningful technical specifications that were the minimum performance a buyer could expect.

For example, there was thread not too long ago which described that a tube amplifier from a well-known designer produced far less than its stated watts per channel and in fact the size of the transformer could not possibly produce its stated WPC.  Your testing might have caught this prior to purchase. 

I have been a member here a long time and can tell you that there will be a lot of members who will find that the criticism hurled at you above is totally unwarranted.

@rcaguy welcome to the forum. I agree about attending to both objective and subjective experiences. Do you have a favorite brand that you like that attends to both? 

My cartridge test measured flat from 10Hz to 20Khz per the test sheet (unlike Lyras with their rising high end test measurements I've seen as well a heard).  

Where do the measurements for cartridges exist?
That seems like a place I would to peruse.