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oxric wrote:

Firstly, the costs involved and the real chance that this project might not work make this project statistically a horrible waste of money, time and resources which could be better spent in pursuing other solutions which are more likely to end in success. Your assessment of the cost of the materials must surely be either incorrect or grossly distorts the real financial costs of this project.

The cost. I do have a very clear, very realistic and well-budgeted plan (that I have my reasons not to publicize for now) but it will work ONLY if the space on attic will more or less comply.  I am OK with that cost. If the project will require more extended intrusion into the building framing or moving fundamentals of the stricture then the cost-benefit assessment will be adjusted and the conclusion will be drown accordingly. With all my appearance of being a super-compulsive nerd I am in fact a very pragmatic person. I for instance plan to do this in a way that will not drive the cost of the house down…

oxric wrote:

In addition, regarding the localisation of some of the upper frequencies where your mid-bass horns are likely to be operating. I doubt one could redress problems with the localisation of these low frequencies, especially if they cause vibrations and localised air ripples in the space above your head. Instead of the vibrations that move across the floor from a not properly isolated subwoofer, you would think that Zeus in the skies is taking care of the lowest notes.

A valid concern, I do not have an answer. I just do not know. My only sentiment is that I did have a number of experiences what I loaded channels to walls/ceilings and they behave very much different then direct radiators. You can take a monitor, low pass it at let say 1000Hz and place it in the middle of the room. The monitor will be well-localized. Then attach the monitor to a poll and place in at the very ceilings. The monitor will be load the whole room. I hope, just hope that I will be able to use this effect giving the fact that my midbass horns will be loaded to the ceiling, the cathedral profile of which will be the continuation of the horns’ mouth.

oxric wrote:

I imagine your answer would be that your Fane 8M upper-bass horns and low frequency subs would anchor the low frequencies in question….

Yes, this is certainly the hope but who can evaluate or predict the validity of the hope?

oxric wrote:

Thirdly, I cannot see from a purist perspective how you will get around the time delay problems (a point that MSaudio does not make forcefully enough) without resorting to equalisation in the digital domain, an area that I thought you considered a definite 'no-go area.' This should I think be used as a last resort but I do not think you have quite reached that point yet, unless you have carried out further research or experimentation which are not apparent in this thread.

I completely do not understand the concern about the time delay. The whole idea is to make the midbass in-time with the MF. Look at the diaphragm.

http://www.goodsoundclub.com/Site_Images/HousePlan.jpg

The pair of the “A” horns is something that I am planning to place in attic. If everything will go as I plan then they will be very much time alighted… and invisible in the room.

oxric wrote:

Fourthly, I think you have given insufficient weight to the very psychological effect of investing such an arduous amount of time and funds in such a project, irrespective of how successful you are at integrating the mid-bass. Your mind, even your 'bones' will know where the bass is coming from and you will never be able to forget that when you are listening to music I daresay. The last thing you would want is to put yourself in a situation where you are constantly on edge, asking questions about the quality and localisation or time delay issues rather than simply relaxing and enjoying your system after a very tiring and stressful house move.

Well, Rakesh, how different it from anything else? You instead of listening music could constantly to be concern about the VTA or cathode emission of your output tube. I think what you say is valid but it has no direct relation to my project.  I am well familiar with the fact the I do not build the midbass horns but I build Sound in my room and I am not planning to take my eyes from the ball. Well, if it turns out badly then all that I will need to do is to cover the triangular wall with dry plaster wall and forget that there are horns behind it. It is juts money. If all that we peruse are money then all that we find will be just money. I assure you that I’ve lost much more than what I might loose on this midbass project. I wish that that the midbass project was the worst lost I had in my life.

oxric wrote:

Lastly and most damning of all, in my humble opinion, you do not know what life has in reserve for you and you may meet the woman or cat of your dreams tomorrow, change jobs, or for any other reason, have to move home. I doubt that moving the rafters will be to the liking of the moving professionals you employ.

Do you think that if I change my job, meet the woman of my dreams or get deadly cancer then I will change what I am and switch from audio to Philatelia? Well, if so then don’t you think that while it not happen yet then it is good time to build the midbass horns? :-)

oxric wrote:

So as I said at the beginning, I hope you do go ahead and prove all the doubters such as myself, wrong.

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