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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="be"]There is no analogy to chromatic aberration in acoustics of air.[/quote]
Disagree. Regardless the reason for Chromatic Aberration in context of the given illustration we care ONLY about the arrival time. In case of lens we have the ...
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I am not sure what you say. You said that you are able to do time alignment by by-ear listening “a well known single instrument recordings, then to more complex and textured recordings”… Can you tell me what you are listing for while you are doing it...
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[quote user="jessie.dazzle"]Romy, I'm very pleased to learn that you've got your Injection Channel done. I assume the above illustration is not indicative of the way you have the Tannoy Red aligned with regard to the other drivers, as it appears to b...
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[quote user="drdna"]While I think it has a lot of potential, I worry that the added complexity may lead to new problems that may outweigh the benefits derived, even if it is done very carefully, one of which is time alignment as pointed out.[/quote]H...
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Wojtek,
I do not think that Martin has any time alignment strategy. You see, the necessity for time alignment is a basic fundamental principle, and particularly in horns that spin phase like helicopter. However, in many instances the horns are juts ...
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Midbass from horn in
small room can be hugely benefited if it bounces but to make the
assembly of horns visually pleasant, time aligned and functional at the
same time is a big question. I do like the notion of Midbass fires t...
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That was a subject of long consideration for me and I ruled
not to go for time alignment. You see, my current listening
position is 8.5 feet from the diaphragms and my ceiling height is 14 foot. Let pretend
that I am siting at 4 feet at my listeni...
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Hello Stringreen,
First, though I do use it, I think the term "time alignment" is a misnomer... We should really be calling it something else.
When you say "Time Allignment has nothing to do with the placement of instruments in an orchestra", y...
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[quote user="electronluv"]"Eyes do the hearing" is a comment geared toward you as you make alot of assumptions based on just what you see in photo.[/quote]
It is not just about what I see on photo but about which design principles a given depicting ...
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[quote user="I.M.Distortion"] Dear Romy Chapter 1 in the audio cyclopedia, you should read it because you are the won who lacks experiance when it come to building a sound system.
#1 from were you listen to system from you should be abl...
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[quote user="msaudio"]Putting The Mid Bass horns behind your head will not work. This thread was about Mid Bass Horns Project, do you thank you will be able to use any frequency above 80 cycles with rear fired horns that are behind your head? Tha...
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It is not about Dynamic Range per say but about dymick differences that I feel and that I care with good ULF he effect of rising of acoustic and tonal pressure is instant, very soft but absolutely instantaneous. Live music has feel like literally...
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Guy, here some unconnected comments that you might find worth considering. They are in no order or importance, just random thoughts.
1) Talking and describing about horn we shall always mention at least 5 mandatory characteristics
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[quote user="Romy the Cat"] Ok, I do officially like this “Battle Road” hours. Upon many considerations (and there are 4 ways to implement the midbass horn in that room) I have inclined to my leading idea to do it elegant and with time alignment....
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I never heard it or about it but here is data:
http://www.meyersound.com/pdf/products/studio_series/x-10_ds.pdf
http://www.meyersound.com/news/press/sos_x10_800.htm
It looks like it has CB horn and aluminum cone in pl...
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Keith,
Very good, thanks for the images. It would be very interning to learn what the bandwidth of the horns, the bandwidth of the drivers and the specificity of crossovers you eventually chose to use with each channel. It might take for you for a w...
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[quote user="be"]The paradox of the orchestra sound would be resolved if we asume that the audience (in the good seats) mostly hear the reflected sound, primarily from the wall behind the stage and that the players at the front follow the visual lead...
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[quote user="Romy the Cat"]Hm you are true in the “terra incognita” territory as far as I concern. The preamps are mystery to me. All my attempts to make any decently sounding preamp or even buffer failed. To me Placette was truly God sent and if I g...
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Koh,if time alignment is critical (in my world it is), the sources of the sound (the driver diaphragms) need to be aligned. A very long exponential horn and a short tractrix are not „impossible“ to align, but what reflective surfaces ftom the exp. ho...
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I must be missing something - or not be ready for this yet. Here are my understanding problems:1) he starts with the "left" speaker and searches for the best bass. I would think that one should search individually with the left and right and pick the...
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Hm you are true in the “terra incognita” territory as far as I concern. The preamps are mystery to me. All my attempts to make any decently sounding preamp or even buffer failed. To me Placette was truly God sent and if I got burned that I am looking...
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I think to call what Bill made as surround sound is make huge the service not only to the concept but to ourselfs. I wrote quite extended review of my thoughts on the subject and I was about to publish it but it is not in the computer that I have ac...
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In his latest YouTube,Romy mentioned using my prepro to time align my drivers.I use the Trinnov Altitude 16 prepro which has a total of 20 channels. 16 of the channels have balanced analog outputs and the othe four Channels use the rca and optical sp...
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Have been playing with the Dannoy’s for four weeks now and they have significantly improved. Using my Trinnov pre-pro to see and adjust the parameters, i can answer Rom'y points.1. Frequency response: combined with a JL f113 subwoofer crossed over at...
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[quote user="Bill"] I have set up a 16 channel system with 7 floor Edgar horns, six inexpensive height, and one overhead speaker (all under $150 each) and one subwoofer channel, all controlled by a Trinnov Altitude 16 pre-pro, which is a computer...
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Righto then, I guess there is no reason not to try this, except that one of the original crossovers here is non-functioning (if I remember correctly), so if trialling in stereo I'll have to crossover in Melquiades. Should have the parts here to do t...
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[quote user="Djjjj"]Thanks a lot, rowuk.I do read the Macondo axioms again when I got your suggestion. We never think our system is a perfect one, we will and must do our best to improve our system and correct flaws.Hope to keep in touch and get more...
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The ideal horn system would have to be well integrated into the room, acoustically as well as optically/cosmetically. As far as a commercial venture goes, I believe that Marc Henrys "La Grand Castine" was already (except for the ULF dipole panel) ver...
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Hi Romy Im just trying to imagine that. If you got to keep the vertical offset small, between the ways, this would rip a hole in the middle, wouldnt it ? Also bit surprising as i thought you liked the injector on the ground initially. I hope I unde...
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[quote user="speedysteve"]The systems I've heard with steep slopes (only 4th or 8th order) sound hard and unnatural to me.[/quote] Yes, the higher order crossovers do sound harder even if all time alignment measures are taken. Still, do not forget th...
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