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

Who cares? Listen, and decide if you like it in your system. Life is too short 

@amir_asr , this is what you said to do:

I explained how you do that in the video. Setup your system such that you don’t know which cable is used (cover/hide it). Then have a loved one randomly switch one cable for the other. You keep score of which is which as does the person doing the switching for you. Do this 10 times and see if you can correctly identify one cable at least 8 times.

This is my reply:

@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.

I did your test, that’s it. This was a reply to you, not the OP.

This thread isn’t about blind testing yet here you are demanding it and then were rude in your reply, how can you get a blind test wrong, you hear what you hear.

This is another bait and switch tactic from someone who is unable to walk the measurement and system walk when it comes to himself. As far as anyone in this thread can see all you have is just more hot air, on and on. Please prove me wrong and post something ok?

Still waiting......🙄

Audiogon Forum 1- ASR 0

@kota1 

This thread isn’t about blind testing yet here you are demanding it and then were rude in your reply, how can you get a blind test wrong, you hear what you hear.

Again, I explain this in the video I posted earlier. A single trial like you performed means nothing.  You could imagine there is a difference and get lucky by pointing to one product you prefer.  It is only true repetition and randomization that we can tell you consistently can find the same attribute.

If you run the test only once and guess "right," there is still 50% chance it was a lucky test.  You need to repeat the test and get enough right that probability of guessing shrinks down to less than 5% (p<0.05).  If the results are obvious to you, then you should grind that down to 0%.  For 10 trials, this requires at least 8 correct guesses. 

As to why we are talking about blind tests, folks said they had no use for measurements.  I am perfectly fine with that.  Use your ears instead and show that you can reliably tell the difference beyond lucky guesses.  Do it with your system, your content and as much time as you want to take.  Not an onerous ask. 

Remember, instrumentation shows that what reaches your ear is no different due to these cable differences.  This is why we insist on proper protocol to make sure the improbable thing you say is really there.  You understand this, right?

@kota1 

This is another bait and switch tactic from someone who is unable to walk the measurement and system walk when it comes to himself. 

Once more, this thread is about audio system measurements from manufacturers.  If you have nothing else to say on this topic, then that is that.  Changing the topic to my system, my room measurements, etc. has zero to do with the topic at hand.

And so far, I am the only one posting measurements.  You have post nothing.  Not even about your favorite topic (your room measurements).