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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
amir_asr
777 posts
 

If you rather watch a video, here it is as well:

 

 

kota1
2,706 posts
 

@russ69 , thank you for your thoughtful and articulate response, What did you think of the idea of checking customer reviews? I use Mogami cables and we both seem to like them. I personally found that attention to power was a good idea but totally subject to your grid and the wiring in your home. I don’t have dedicated circuits but try to work around it as best I can.

As for speaker/dsp/room I like the idea of starting with the room, then DSP to dial it in. That was the exact method shared by Jeff Clark of Audyssey and Phil from Sound United. I got the best results with the pro version of Audyssey and this is video where they both laid that road map. Even if you don't use Audyssey this is a good resource, FWIW Jeff did reply to my e-mails and seemed to really care about their customers:

 

laoman's avatar
laoman
444 posts
 

That was a quick and interesting response.

kota1
2,706 posts
 

This video about power cords is well worth a watch too:

 

fleschler OP
2,021 posts
 

@laoman Of course he is saying that, he’s a know-it-all.
"Uneven bass response in every room and power cables can’t make a difference." What nonsense is that? My friend's room was not extraordinarily bad, it was good overall and his bass was terrible. Now it’s excellent. All it took was power cable replacements, just like quality caps, improved power supply (that’s what the power cables did), et.al. I have been corresponding with another Audiogon member who has experience with Amir. Because of his relationships with local friends who are members of ASR, he doesn’t want to post his interaction. He is a many decade, major audio equipment designer for multiple companies, now working for Intel. He asked Amir to test a piece of equipment and asked him about the type of measurements. He let me know that Amir could not properly test it and had inferior/limited test gear whereas he had worked at audio manufacturers who have $2+ million test equipment. He decided not to let Amir do the testing and not join ASR’s forum (the word science is a misnomer in the name).

Amir-"A power cord will do absolutely nothing for this as this effect"-(irregular bass response in a room). RIDICULOUS. When a horribly irregular response becomes a perfectly regular response TO THE EAR when listening to it by changing the power cables, there IS an electrical change that caused it and it is not imaginary. Well the changed response may not measure perfect because of the room, it sounds perfect or nearly perfect. Pre-change in the particular cheap power cables, the sound was totally unacceptable and would measure terrible. As music lovers and not interested in proving the OBVIOUS, there is no need to test or measure the difference.

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