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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
 

@fleschler 

@amir_asr Please do not bother the cable manufacturer.  We don't care how much air is injected into your system (who knows what that is as @kota asks) or how long the burn in is (about 24 hours) for your system. 

Well, @kota claimed the Audioquest Go-4 cable I was testing on ASR needing 200 hours of burn in:  

"If you want performance you need to get NEW cables on loan from a DEALER who has a return policy. Then, after around 100 hours of brek in, go for it."

How do you reckon he figured out the 100 hour number for any test system but you can't?   When you were experimenting with the cable you were building, did you wait 100 hours between every change to see the results?  If not, where do you think he got these numbers?

As to air, I am very disappointed that you think your cables can't do that for me.  What are the qualifications for systems which can accept such air from your cable?  Are they listed on manufacturer website?  Or is it a random thing and what you say about improvement may not be there at all as you are implying with my system?

And why is it a "bother" for manufacture to provide such specific data?  You created a thread asking manufacturers to provide data to us as customers.  Now you say we shouldn't bother them??? Are they in a privileged position with no competition as to us treating them special in this regard?

Really, you seem to be saying other cable companies should do this and that the one  you are involved in, should be exempt?   

kota1
2,706 posts
 

@amir_asr , you need to check your source, I said 100 hours to burn in a cable. If you continue through that same thread I also said if you want to be specific ask the manufacturer, and then you banned me!!

As for your search for a cable with more "air", may I present the iFi Supanova!! Air is listed if you look at the pictures of the iFi Supanova cable I just posted, did you miss it? See page 8. Remember, don’t ask for double blind tests unless you do them yourself:

 

amir_asr
777 posts
 

@amir_asr , you need to check your source, I said 100 hours to burn in a cable. 

What do you think I am talking about??? You claimed the Audioquest cable requires 100 hours with no facts backing it.  I am now asking @fleschler who has been involved in design of some cable and is promoting here, what the burn in is for that.  And why it is that it won't pump air into my system as a matter of principle.  I didn't know cables were picky about who is trying to use them.

As for your search for a cable with more "air", may I present the iFi Supanova!!

What is wrong with the cable @fleschler is selling us on?  It lacks a compressor to put in any air???  How many hours does the ifi take to burn in before said air feature comes on?  I WANT MY BLOODY AIR!!! 

 

 

amir_asr
777 posts
 

@kota1 

Remember, don’t ask for double blind tests unless you do them yourself:

That's like asking your doctor if he knows how to practice medicine!  Of course I have performed double blind tests.  I have not only done them, I have post them online many times.  I show a number of them in this video including techniques for passing difficult ones:

 

Have you run any such tests?  Has @fleschler run any to show effectiveness of the cable he is promoting?  

kota1
2,706 posts
 

@amir_asr , thank you for posting the video and your attention to detail. I watched the testing you discussed at the 24 minute mark. I have done my own version of this test more for amusement than science. First I open up Tidal and create a new playlist. Next I upload two versions of the same album, one in HIFI and one in Masters. Then I hit shuffle and see how many times I can pick what type of track is playing. To do a blind listening test with speaker cables or interconnects requires a more elaborate setup (something like the Van Alstine ABX Comparator) . I don’t know how you would do a blind listening test of a power cable with that device.
So, I don’t see how the video you posted would help a member test cables or other components.

Please post another video or just some pics of your system and listening room if you have time. If you are the "doctor" let’s see if you are taking your own medicine OK? Don’t forget to post the in room frequency response. 

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