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unicon wrote:

that old sails does just control <1khz reflections ... you need to control your mid bass n basic bass frequencies first.

I guess you meant >1khz reflections? Yes, it will and it is erectly what I am looking form – to subdue the HF noise.

unicon wrote:

the room i see has lotz of potentials but how much u can get from it depends on making a link between decor n acoustic ... there you can have lots of acoustic options which can fit your decors too(in my idea). anyhow make it clear whats your goal in there ... starting to correct the fundamental modes ? or just first order reflection control ? symmetrical stereo image ? watching your pool while listening ? i know your goal is to get a decent sound out of macondo... but in your room its not your will which can make it sound right its the acoustics parameters which make your room sound. first step in my idea is to do nothing acoustically and just set up your mid bass n listen and try tuning and positioning macondo with your naked room(you can add your decors in  problematic positions to control reflections and some modal control but try to get symmetric sound however) , how much you can succeed  in this level reveals ho much work needs to be done later. i can help more if u like it.

I very much would like to hear your advice or to get help from anybody else but at this point the only think that I can deal with are upper frequencies and only conditional as I do not know how how lower octaves will sound in my room..

Saying all of it I would like to pass what are my strategic ideas are. I do not like and if it possible I would like do not use any acoustic devises under 1kHz. I know it might sound ridicules to many audio people as they trained to believe in different things – bass need to be controlled. I have different ideas bout bass control. I have heard much big installations where bass traps were used. If discard the quality of bass and to pay attention only to the room acoustic properly of bass in those installations then I did not like anything I heard. You see, the bass controls is usually was done by an array of bass traps. I truly do not like this approach. The bass traps, the biggest one, have only limited effectiveness on the spectra of interest and usually have much more effectiveness in 2-3 octave above the spectra of interest. This make bass to sound less problematic but it dries out the bass’ overtones, - I do not like it. Also, the bass traps are a solution for single box speaker. People by some kind of big Wilson where all spectra is radiated from the same footprint and they have no option for creative interaction with bass positioning and crossovers. I mean those speakers are not made for rooms or with respect of the rooms but they made “as is” and then the expectation is that the room will be corrected in respect what the given speakers would demand.

I have absolutely opposite approach.

http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=863

http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=2553

http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=4421

http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=1517

I would like do not correct my room under 1Khz but rather to optimize my Macondo to take advantage of whatever good or bad my room does. BTW, this is one of the postulates of Macondo Axioms. So, my hope is that I have a full control over 4 channels (!!!) that I will have under 1Khz then I might manage them to operate properly, in some case it might be asymmetrical) in agreement with what my specific room does. Of cause it is juts objectives and hope, the empirical practice will show what is doing on what the midbass will be done.

There is one more thing that I absolutely do not know how to predict. My entire Midbass project is standing upon the fact that my back firing midbass source will be located way above listening position and at relatively sharp angle. This shall make the midbass to fire in the cathedral ceiling and will create the situation when bass descent from ceiling or from… nowhere. I absolutely hooked on this idea - to have midbass present- everywhere. I am very confident that I will be able to tune this effect with very precise dialing the midbass crossover. I do anticipate the effect to be staggeringly interesting. However, I do not know how tolerant will be this effect and how much it have leeway for vertical repositioning of listener.  I might tune the proper sound for my listening chair but what will happen if I stand up and walk around the room. I do predict that in this case the sound on my room will disintegrate. How much will it disintegrate only time and the practical test will show. There are ways to correct this effect – for instance to use one step shaper filter for midbass crossover. I was thinking to put a motion detector in a mouth on one of the horn and if the motion detector sees a person walking then it engage one more filter that make the slope sharper. I will see how it will go as the horns are built and installed. Since I did not see it anywhere and pretty much invented the idea then I would like to name the concept as Active Motion Crossover.

The reason why I tell all of it is to demonstrate that my objective is not to modify the room but to expect-match the loudspeaker channels to wheat room is tend to do. Of course they are juts objective at this point and there are no practical successes but I am only beginning to play with the room more or less seriously. I did the very same with my older room and the result was truly spectacular for the room. I do not see why I would not apply the same successful patterns to my new room. Also, nothing is written on stone. What I express is a set of my current convictions. If reality strikes my convictions as faulty then I can but up other convictions. I do not market my convictions as a “package” and do not look them to provide benefits to nobody besides myself. I myself am very interested to challenge my convictions and to see if the ideas will work.  To set up this room will be very interesting project but at this point, with midbass underway, I feel that I have a control over the situation. I anticipate that if everything goes as I planed then it will take for me to the end of the year to make the room to sound in a way that would give me back my normal hi-fi arrogance. I am sure that it is not the only objective of this project my hi-hi-fi arrogance is very valuable to me and I would like do not lose it.

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