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

@holmz  Again, you have not read my postings.  I am very concerned with test measurements to begin/began my search for equipment.  My speakers are very low distortion, especially at low frequencies and are relatively neutral without major humps or bumps.  My tube gear is on the warm side of neutral but not "tubey," or high in distortion, even or odd, from low to high power range.  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 there are no measurements, I use trial and error as does everyone I know locally (and that's 100s of audiophiles, music lovers, etc). 

If I don't get your point, then maybe I have too low an IQ and you're just a genius.  

@fleschler 

 

My hearing is fine.

Ok, so that makes two of us.

 

Sighted tests are verboten? They can only be guesses and wrong. Like rolling dice? Must have measurements! Must be ABX blind testing! Sounds as ridiculous as it is.

So you have never truly put ONLY your hearing to the test where you can't cheat. 

Ok.  (except, apparently, via an audiogram. And it's funny you'd accept those results, which are a blind test, but refuse to accept the validity of blind testing components for what you can *really* hear or not).

If you ever do so you may find it enlightening.  As I've said, between us it seems my approach shows the greater humility.

But it's clear by now we can't seem to communicate about this issue.

We'll talk gear elsewhere.  Cheers.

If I don’t get your point, then maybe I have too low an IQ and you’re just a genius.


@fleschler I doubt it, but I am smart enough not to argue it.

 

I suspect that your system and mine are more similar than dissimilar, in equipment choice. And that they likely sound pretty similar. Your’s is probably better, and mine is good enough for me.

There is some correlation with “pleasurably better” and “measures better.” Your cartridge sounds like it might be an example of that.

 

Again, you have not read my postings.

I read the last post, where you quoted me out of a whole different thread, and how everyone hears differently.
I think that that response should have gone in that thread, but here we are.

You likely want your system to sound both like the real singer in a live performance, and also sound good to you. Maybe you twist a tone control, I dunno, but I suspect I would not find it too edgy or nor too dull.

And I suspect if I twisted your tone controls around so that it sounded bad to me, that our hearing is not so different that it would sound good to you.
Yeah - It’s possible, but I doubt it.

@holmz

Thanks @axo1989 I’ll do that.

I was aiming for sympathetic humour, not trying to insult you, sorry if it misfired.

@jerryg123 

I also know you are not an EE all you are is some guy with some software (that a member had to teach you how to use) and then you banished him from ASR.

 

My background is an open book.  It is linked to every post on ASR for example: 

I do have an electrical engineering degree.  But importantly, I grew up with electronics.  No way I could do what I am doing without that knowledge.  Here is a bit of what is posted there on my background:

"Without giving away my exact age, I grew up in 1960s with analog electronics as my primary hobby. Learned that from my oldest brother who likewise had the same hobby and spent his nights and days designing electronics. This gave me an intuition for analog electronics which to this day serves me better any textbook or formal education.

Speaking of formal education, I naturally aimed to get an Electrical Engineering degree which I received in early 1980s (still trying hard to not give away my age!). During that time though, the personal computer revolution was upon us and I quickly fell in love with my second hobby: software. I programmed my Apple II and later managed the computer lab at the college where I wrote a bunch of custom software including an editor all the students used to write their programs.

During schooling, I worked at an electronics repair shop, fixing everything from audio equipment to VHF radios. That childhood experience really got cemented combined with a new skill of having to troubleshoot equipment, usually with no schematic. All in all, I repaired hundreds of pieces of equipment, getting a good feel for quality engineering versus not.

[...]

In late 1980s I had an opportunity to work at the computer division of Sony. Initially the job was building a software team to develop Unix but we proposed and won approval to design and build our own hardware to go with it. There we went deep, developing our own ASICs (large scale custom electronic IC), motherboards, audio subsystem, power supply, LCD display etc. Working for Sony was great as at that time they were in their peak of success and their quality standards were quite high. We combined that with great engineering from US in silicon valley and really pushed state of the art in design and simulation at that time."

There is more there and you can also look up on my LinkedIn profile.

My measurements of hardware is with Audio Precision APx555.  It is not "software" but software controls it of course.  I have had an AP since early 1990s so am quite familiar with how to use it.  Speaker measurements are with Klippel Near-field Scanner ($100K system).  I don't need the help of some random person you say we banned at ASR.

If this is how you research your facts about audio, no wonder you are so lost in the woods there.