Nearly all manufacturers do not advertise/exhibit their product measurements? Why?

Thanks @axo1989 I’ll do that.

One manufacturer that I use that posts specs and measurements is Auralex for my room treatments. Of all the things you can screw up in a system you don’t want to screw up the room. I find their products an excellent value as well. They were really helpful answering questions about my setup too and offer a free room analysis, very responsive. If anyone reading this hasn’t bothered to treat their room yet don’t wait. If you look at the pics in my profile you can see various treatments, bass traps, absorbers, diffusors. You can’t really hear what your system is capable of until you tune the room. DSP is limited in what it can do:

https://auralex.com/spec-sheets/

They have an app you use to design your layout too:

@fleschler

Are you deaf (or rather taste depleted that you can’t tell salt from sugar)?

I believe you have lobbed that insult more than once.

Can you tell me specifically what I wrote that leads you to think I have poor hearing?

My discernment for characteristics in sound, both large and minute, is routinely put under scrutiny for my job. I make a living with my hearing. I can't just brag about my hearing on an internet board.   If my hearing sucks, I lose my job.  How about you?

I’ve also put my hearing under rigorous tests where I don’t get to "peek" and ACTUALLY use ONLY my hearing to see what I can tell apart. That is: blind tests.

How often have you truly tested your hearing - your hearing ONLY! - rather than when you know what you are listening to? If you continue to brag about how you can tell things apart in "sighted" tests where you know different gear is being switched, that’s about as "impressive" as saying you can tell me what number the dice will roll...but only if you first get to look at the result after the roll.

My hearing is fine. It was tested twice in the past two years. My upper limit is 16 Khz, the tester said at normal amplitude which I do not know. I have exceptional hearing for my age as does my 88 year old mother. I must have great hearing and reflexes while sleeping to hear my wife’s Dexcom/phone alarm which just beeps to provide her with juice when her blood sugar drops and she would otherwise die.  She sleeps through fire alarms and has no awareness of low blood sugars after 61 years of Type 1 diabetes.  So, my hearing is critical to my marriage.

I also am very depended upon by an orchestra, chamber group and many choirs to make good recordings in major venues. My recordings are generally superior to current over-reverberant, distantly miked modern recordings. My chamber work has the clarity of the best jazz recordings.

There is a multitude of forums not on ASR and my above cited new Audiogon forum which is what I believe about measurements as a starting point, trial and error and personal listening preferences. You don’t like it, do what you want. I don’t need to be lectured as to right and wrong.

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.

@kota1 +1 You are so correct.  Some audiophiles feel that the listening room is 50% of the sound.  I know from my experience, that getting the room acoustics right is fundamental to maximize the quality of the sound.  As you can read/see from my listening room components and construction, I get high end sound out of less than exorbitantly priced equipment because of my dedication to creating a favorable listening environment.  My neighbor wanted to purchase my home before I did and convert the 20X20X10 living room into a listening room because his room is just average with $1/2 million audio system.  At least he finally got cabling right so that it is now a very enjoyable listening experience at his house.