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 recommend Synergistic Research power outlets, including their earliest ones which can be had cheaply but I see that they don't match your Australian cabling plugs.  Second best would be hospital grade outlets which I used for 25 years in my prior home.  I installed $50 h.g. outlets in 1993 but the problem was corrosion even in the dry climate I lived in.

I would make my own power before I considered GR Research… that assumes that the power cord does anything helpful… which, as the title of thread suggests, we have no way of knowing:

Nearly all manufacturers do not advertise/exhibit their product measurements? Why?

I know nothing about GR Research and never heard of the company. 

I cannot recommend GroverHuffman or SR power cables to you because they don't come with Australian style angled three prong plugs.  

@russ69 , contact The Audio Tailor , a dealer in Australia, and see if they carry products you can audition:

 

 

Maybe start with a entry level power product they carry for proof of concept, look at the reviews here on Audiolabs DC Block:

 

at 3:00 in, "just ridiculous, I have had speaker upgrades that made less of a difference".

@russ69 if that Australian dealer lets you audition one please let us know how it works out.