Hi Raul, since you did not want to play in my thread "In room response", I am back. First off I have nothing against you. Just the bull--it you keep expounding. You are contradictory, not just with me and others who post here, but with yourself (perhaps the biggest sin. Next to lying to yourself?), in almost all of your posts and I find it offensive. Especially when you are unable to verify or answer the most simple, albeit hard, questions. This thread "do you need a subwoofer",by itself, is full of it.
You say, "My audio/sound reproduction priorities are: neutral and natural tonal balance/pitch, Accuracy ( low distortion, low noise, no colorations, no cliping, grain free, liniarity, no compression, etc...), timbre, dynamic, focus and soundstage . My whole audio system target is to be nearest to the recording!!!"
"My audio/electronics priority is: accuracy/synergy/confidence/constant/."
Tell me Raul, How do you have any of those priorities when your in room freq response is +- 20db? Accuracy, how is that accurate? Natural tonal balance and pitch, how does one have accurate pitch and a natural tonal balance when related freq are +- 20db? No cororation, isn't a plus 15db or minus 20 db freq response a coloration?
Dynamics, you can't have maximum dynamics when you have dropouts of -5 to -20 db across the sound spectrum and +50 to +20db peaks limiting your volume levels.
Raul, you know for a fact that a resonably good, or better yet, a great freq response is one of the most important properties for audio reproduction. One of the basic tenets of audio reproduction is a response of 20-20,000hz. Thats why you do it in your preamp, thats why you want full range speakers or subs and super tweeters, because it does not matter where the error takes place the result is the same. One of the reasons why, if I were to buy your $12,800 preamp, I would pay for a +-001% freq response. Where there are changes in freq response you do one of two things. In a dip you loose detail, decay, dynamics, and the ability to get pitch and a "natural sound" amongst other things.
Where there are peaks you obscure detail by overpowering other freq and it makes the music sound "too loud" amongs other things.
Combine these two problems and and you can hear why it is so important and it does not matter where the comes from! The effect is still the same.
Another problem, of modal ringing, needs to be addressed. And there is only one way to obtain this, and it aint frilly curtains and doilies. You have to stop the low freq reverb that obscures music and imaging.
.
An in room response of 20-20,000hz response is preferable, within reason +-2.5db (and thats debatable) along with a subjective in room response that is pleasurable to the ear. And please please don't hang me with a numbers game.
Also the importance of modal ringing is not to be underestemated. This must be obtained at a certain volume level if it is to approach anything like a real "audiophile" level of dynamics and realism. Those are two goals that are hardly unreasonable.
So, how do you have all of these important priorities?
The answer is you don't. You cannot have those priorities in a room with pretty curtains, doilies and a pure wool virgin rug. It ain't happening and untill people like yourself stop fostering this false info and admit the truth, you and others will not be even close to any accurate reproduction. You said, "thanks God I have a good room" "I am really lucky about", well you better be thanking God or some virgin saint of acoustics. And luck? I am pretty sure that as a scientist you really don't believe that luck has something to do with room acoustics, and its effect on audio reproduction, because the acoustics for your room are no different than any other room. Now you can continue to foster this bull that you have a great room and an accurate system to others but I for one don't believe anything you say. An untreated room is a disaster pure and simple! And yours is untreated.. so guess what? It is a disaster. Now you may treat the room up to a point that is good for you, with frilly curtains and sofas in front of your speakers but untill you admit the reality you will never progress.
Why is this such a "hard" subject? I don't know, but my guess is that you really dont want to see the Emperor Wears No Clothes. It will force you to admit certain truths that you find disturbing and against your belief system and dogmas. And it will reveal the hard cold fact that any system in an untreated room is a mess, which will be enable you to continue to foster overpriced equipment to an unsuspecting public.
What do I find all of this so disturbing? It is that your desires (in you stated goals) are exactly the same as mine! Why do we find it so hard to come to a meeting point?
In this thread you veered off course to save face, make contradictions and false claims even when others are agreeing with you. I am sure IMD is a problem, but please show me the problem and then reveal to me the answer, how do I lower IMD? How low do I need to go? How do I measure this? Or do I need your calibrated golden ears?
Raul, why do you find it so hard to answer my questions? Are they not relevent? Do they reveal too much that you are uncomfortable with? You are a manufacturer of very expensive equipment, do you not want me to believe that you have nothing but the best? Do you not want me to believe that when you test certain equipment, worlds best tonearm and 25 phono cartridges etc.. that you system is so inaccurate that it is useless. Would it not let the cat out of the bag to reveal that you system can not sound even anything like accurate when you have frequency deviations of plus/minus30db?
I say to you, lets start over with some meaningful dialog. And while we can continue to agree to disagree we can also be truthful with ourselves and others, in that way we can progress toward our quest.
I am sorry if you really did not know any of this, and really are ignorant of room acoustics and their effects. If that is the case you really need to do some searching.
Bob
