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

I have added my main listening room components and front and back walls of that room. I have a small amount of reverb, corner echo which the center cloth absorber eliminated. My room isn’t as near perfect like the two @Kota 1 examples show but it’s pretty close.  I feel sorry for Mike for letting Amir in.  In all of the systems I've heard, no one wanted to give me measurements of their room/system/performance and I didn't ask them either.  No one cares, only Amir/ASR members.  Mike is too nice.  

Amir is so full of it... I tried six digital cables and they all sounded very different. Not just to me, but to five other listeners, two golden ear friends. My wife who is not an audiophile but has a very keen sense of sound gave me her comments. The SR Atmosphere X Euphoria was the obviously best cable with no apparent colorations/neutral sounding, bested or equaled all other cables in every sonic aspect. Well worth the money/$1500. However, Grover Huffman’s very inexpensive digital cables $200? are quite good and came in second, mostly lacking in depth, it’s forward sounding. For $10, Monster Cable’s digital cable was rather bland but neutral, lacking dynamics mostly, okay resolution and okay, not great ambiance/depth/width perseption.

@amir_asr , you raise an interesting point about risk. As you are a dealer I respect the fact you might not like when a manufacturer or dealer assumes all the risk in a transaction by offering a 30 or 60 day return policy. The manufacturer or dealer likely feels the return rates are low enough that the policy is profitable since it attracts new customers that otherwise might not try their products..

As a customer I prefer to deal with these types of companies, YMMV.

Just for you @amir_asr you are as much science as the wagon peddlers in the old west.

@kota1 

@amir_asr , you raise an interesting point about risk. As you are a dealer I respect the fact you might not like when a manufacturer or dealer assumes all the risk in a transaction by offering a 30 or 60 day return policy.

Once more, they don't assume all risks.  You have to pay for return shipping and hassle of boxing and shipping it back to them.  Then you sit there waiting for a refund which may or may not come.  And that burn-in period requirement is a sure way to make sure you don't immediately send the thing back.

You are a perfect victim of their marketing if you fall for this scheme.  Here is the wiki for you: 

"The use of money back guarantees has grown significantly over the last few years and has become standard practice in direct marketing across all media. Very often, unreliable businesses use it as a tactic to reel the customer into a false sense of safety....Issues relating to false guarantees have become so common in the United States that the Federal Trade Commission has specifically addressed the issue in the Code of Federal Regulations Handbook (§ 239.1)."

I suggest not being such a gullible consumer.  It is folks like you who let these companies get away with empty and false claims for their products.  Instead of being an advocate of audiophile buyers, you have joined the sellers in promoting junk audio products with zero benefit to fidelity of your system.

@dustyb13 That’s is the opposite to @prof posted on the rebuttal site. He is arguing with other ASR members that listening isn’t meaningless despite measurement results. He is using/preferring an inferior measuring CJ pre-amp instead of a very superior measuring Benchmark pre-amp.

@millercarbon I have in wall activated carbon filtering paneling which effectively removed excess bass nodes in the room. It was designed for six 12" woofers in my current speakers (or future speakers). Excess and uneven bass response is never a problem in my room Slight corner treble echo/reverb is as well as coherence/focus that a simple cloth in a narrow strip on the front wall cures (pending a more aesthetically pleasing panel or covering). When you walk into my room, it is unlike an anechoic chamber but rather quiet and calm. Once voice/music is heard, it is evenly transmitted and a touch on the live side, like a good performance hall. All of those absorption panels on the side walls and ceiling were designed to dampen the reflectivity of the cherry plywood finish. After reading Amir’s comments on Mike Lavigne’s room, maybe my room does "sound" better.