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 You are such a know it all.  Such a foolish person.   I don't why I answer except you are on Audiogon lecturing us.  

My neighbor and friend was ashamed of his system when I lent him ONE power cable for his amp.  He had the habit of changing gear on a regular basis, including a loss of $22,000 on a D'Agostino amp that he paid $46,000 for.  I heard it when I first moved in in 2019 and found his system so distant and thin sounding on my CDs that I told him I had never thought of those recordings sounding that way.  He came over to my house and heard my "lowly" system (he is also a gentleman and did not criticize my system either) and was astonished that the same recordings had so much color and dynamics.   He also thought other visitors were just being kind and wouldn't criticize the sound.  This is an electrical engineer with a net worth of around $40 million self-made in real estate, not a stupid person,  

It took NO time to tell the difference once all fiver or six (I forgot) of his Pangea power cables were replaced with GroverHuffman cables.   Furthermore, my pre-amp was substituted for his Audio Research SP-28 and walloped it.  He decided to change the input tubes (6NG/6H6) as suggested from another audio engineer friend and that resulted in sound very similar to my pre-amp.   THERE IS NO NEED TO MEASURE OR BLIND TEST OBVIOUS SONIC DIFFERENCES THAT ARE SUPERIOR.  You don't get this so stay off the Audiogon site.  My friend is so happy, he can hardly contain his joy and like me, listens at night for 2 hours or more.

You are the condescending person, not me.  I don't ridicule friends who just want to hear music, imperfectly or with really old equipment that may need maintenance (like old caps).  Many of my friends are musicians, singers, orchestral players and audio engineers.  I often praise friends telling them they made good choices years ago who have older Marantz, Fisher and Yamaha gear for their musical sound, tube and solid state.  

Mid-fi isn't a price, its an execution of audio fidelity.  There are so many great older mid-fi equipment pieces I've heard.  Even a lowly <$75 Sherwood 7100 receiver is mid-fi in my book.  Hook it up to a Legacy Signature III and enjoy beautiful sound.  Cabling can make a difference for mid-fi equipment.  

Saving people from foolishly spending 10X on cabling, etc. compared to their equipment, especially for less than mid-fi equipment is a mitzvah/a good deed.  I remember a friend 30 years ago who wanted to purchase a $3000 CD player to go with a Pioneer 1970s receiver and Onkyo speakers, hooked up with the cheapest RCA ICs and lamp cord.  What a mistake in spending money that would have been.  

AND finally, I 100% disagree with your assessment concerning cables and tweaks.  I say that I'm right.  Most manufacturers of quality audio equipment say that I am right.   They suggest and often urge customers to purchase complimentary equipment and cabling to extract the maximum from their equipment.  They often design special footers for their equipment, anti-vibration chassis, etc.  I've read an ASR forum where the members spent pages excoriating a member when he used an anti-vibration platform under his amps.  If it worked for his equipment, why not?  It may not work for others but maybe it did for his system.  

 

holmz , It was stated correctly that this is a thread about measurements. Why not post some to discuss? It is a starting point, not a destination, OK?

Yeah - it could be interesting, but it is a lot easier to measure gear than an in room system.

 

If you look at my system profile I posted the in room measurements. If you read the system description you will see links to my components as well as some specs for my active speakers.

I only see the before/after measurements and the paradigm active reference mentioned. Are they doing the EQ themselves? Or is that happening elsewhere in the chain?

 

This isn’t a contest, this is a chance to compare ideas and obviously no one is perfect.

Your room measurement were nice to see the other day.

 

 @fleschler is starting a build I would love to be able to do, did you check it out?

Just now, but only a thick, door and another shot… so far 2 pictures.

 

He is building a room from the ground up and he posts measurements of the room, great stuff. BTW, your system doesn’t load properly when I check your profile. There are some "banging" systems I can’t even imagine in the virtual systems area. It provides inspiration for me personally, I don’t know about anyone else.

So yes, some not so much.

 

It took NO time to tell the difference once all fiver or six (I forgot) of his Pangea power cables were replaced with GroverHuffman cables.   Furthermore, my pre-amp was substituted for his Audio Research SP-28 and walloped it.  He decided to change the input tubes (6NG/6H6) as suggested from another audio engineer friend and that resulted in sound very similar to my pre-amp.   THERE IS NO NEED TO MEASURE OR BLIND TEST OBVIOUS SONIC DIFFERENCES THAT ARE SUPERIOR. 

Actually that is exactly what (and why it) should/could be tested.
I have never seen a fraction of an iota of measured difference presented in the cables, so it would be very interesting to know that they could be picked out consistently, and then why/how they are improved... Like “What is the mechanism that is at play here?”

 

You don't get this so stay off the Audiogon site.  My friend is so happy, he can hardly contain his joy and like me, listens at night for 2 hours or more.

We have two hypothesis:

  1. It is psychological
  2. it is real
    1. And maybe it cannot be measured.
    2. and maybe it can be.

I am interested in # 1 and 2B.

… ditto for anti vibration footers as well.

@holmz

How to measure a room is a great topic for a new thread. All I would say is whatever software you use get a good calibrated mic. There is DSPeaker, miniDSP, TrueRTA, REW, and of course Audyysey, DIRAC and ARC.

If this is a rabbit hole you don’t want to dig you can have a calibrator do it remotely such as www.accucalav.com:

 

@holmz

As for checking out virtual systems there is a text box beneath each one with a link "read more" which expands it. The links I mentioned are embedded in the description of my system.

As for the topic of "blind testing" it just isn’t necessary or practical. Look, I drop a component in the rack and let it break in for a few weeks. I take it out before the 30 day return period expires. If I can’t tell a difference send it back. If my face freezes in "grinrictus" I leave it in. The people who argue about blind testing are just using it as a crutch to win an argument. Look, you need a panel of "trained listeners", you need the proper setup to switch quickly, and lets not go there. If you insist the best you can do IMO is buy a ABX Comapartor from Van Alstine but without a panel of trained listeners it still amounts to a "Pepsi Challenge" to my ears.

 

@amir_asr ,

Funny how you regress to passive/aggressive mannerisms when you get called out.

Put the multimeter down and try listening with your ears. You might be amazed at what you discover.

Go ahead and tell me that my "boutique" audio setup sounds the same with a $30 power cable and a $500 power cable. Go ahead and tell me that again.

See, here's the rub. Once you know better, you know. And no one can convince you otherwise.

So quit trying to "save the world" from itself, and try listening to the music. 

Your channel is a joke, pandering to fools who are desperately trying to convince themselves that their $500 (insert piece of equipment here) is just as good as a $15K (insert piece of equipment here).

You ought to be ashamed of yourself, really.