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

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.

@amir_asr , my sincere compliments on your accomplishments.

Now that you listed your creds I feel even better we are beating you at the

system/FR measurement throw down-

Audiogon Forum 1- ASR 0

You can have a rematch anytime, with those creds you should do much better in the rematch, just answer the bell this time and post your system pics, components, and FR graph in your profile.

Otherwise that really long post of your impressive creds= just more hot air.

 

 

@amir_asr do not tag me. I am not lost I am not one of your followers and as I have stated I will never go on your site.

I really do not care about your equipment, software or you.

I bid you good day and good riddance.

Looks like you wasted $100K.

Oh and I figured it out, you are old. 

Good day.

@prof   but refuse to accept the validity of blind testing components for what you can *really* hear or not).  I do NOT refuse to accept the validity of blind testing equipment, cables or tweaks.  However, I am unable to do blind testing.  So, I rely on my hearing.  Not too bad in my opinion.  I also listen to my friends who have superior acoustic listening/interpretation ability.  They pinpoint problems, one who has Asperger and audio sound is his superiority in life.  His hearing is like a computer.  I don't inform my two Golden Ear friends what I have done/doing.  They tell me what they are hearing and often, what corrections should be made.  Try topping that with Blind Testing by the usual crowd of audiophiles.  They have really taught me to hear/listen better.  My wife is so used to decades of my cable testing  for the manufacturer that she automatically is skeptical of the sound whether it meets with her approval or something less.  She said I have trained her to hear sound as well as music.  Before me, she was fine listening to a boombox and car radio.  

@holmz I have posted my components and my room on Audiogon.  I do not have tone controls.  I don't mess around with feedback settings, cartridge impedance settings, etc.  I can adjust these but once I found the best sounding setting, I leave them alone.  I sit back and listen to music.  I don't play with equipment, it's not my thing. 

I've heard $15+K cartridges and they did sound great with my hot stampers.  They don't typically sound as good with my lesser pressings, mono LPs, etc.  That is why I chose to step down to a Dynavector 20X2L.  One friend who is an LP only expert who is seen all over the Southwest at shows selling high end jazz as well as rock and classical agreed that his Dynavector 20X2H played more LPs better than his current Dynavector XX2L.  When the latter wears out, he will return the former.  Three other friends with 3,500 to 8,000 LPs also use the same cartridge, one stepping down from the Dynavector D3.  The 20X2 sounds great on so many LPs.