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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I just remembered that I sometimes use a cementatious material that has added to it a fair amount of foam-ish beads and acrylic. The stuff sets up like cement but is MUCH lighter than cement or plaster, perhaps 2/3 lighter. I mention this...
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N-set, you have actually struck upon one of the difficulties of not being the designer and builder per se, only an actively interested commissioner of a bespoke system from a third party. I foresee logistical difficulties in building the system in a ...
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Romy quotes in blue (pulled from the "Adding one more channel to the Macondos" thread) "1) Make sure that your cone is properly center in a gap. It is very important as misaligned cone will do compression at bottom end"
I feel confident that I am ab...
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[quote user="Romy the Cat"] It is very self-explanatory and liked it a lot. The advantage is that it might be used in any rectangular room and the most important that it is VERY simple to build this way. I think that if I have room then I might stop ...
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Thanks Romy, Paul, and Ronnie for the comments and encouragement :
Here are some responses :
1) Rubber gaskets :
Maybe it is not so important to have an “air-tight” seal (???). The rubber gaskets are there to seal the cover to the rear chamber...
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I love not only the beautiful results you are getting, Jessie, but also appreciate that the methods you are adopting allow you to continue to refine your horns on the fly. Particularly nice, to my way of thinking, is that you can tune your horn...
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[quote user="decoud"]I know you do not want to do it, but it is a shame not to do it: actually manufacture a version of the Macondo with an integrated dset, cut down enough (say three channels) to make it feasible while still demonstrating the advant...
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"Gargoyle, YMMV, but I
associate LF propagation/amplification with mass; there has to be some
way to really "anchor" at least the LF driver. "Noted"I was thinking MF for
the felt and/or paper horns, although I guess you could begin with a
chi...
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Again, I am not insisting that the material of that horn will behave like a bell so much as I am suggesting that bell-like sounds will eminate from this horn. Is the difference clear? Some of those Altec horns were textbook exam...
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[quote user="Romy the Cat"]
It is very self-explanatory and liked it a lot. The advantage is that it might be used in any rectangular room and the most important that it is VERY simple to build this way. I think that if I have room then I might sto...
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Hello friends,Romy wrote (in the context of the MingSu/Jackson/Goto upper-mid bass horn thread):"...Yep, I would hang the midbass above and as you said put an upperbass on a floor to anchor the center image. Something similar to what Jessie is doing....
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KlausMartin (Azura horn ) is making for me extension to 2.75" (BC 8p21)and 1.4" for 204 Hz (altec 288c) .He also developed 550 hz horn for S2 . He understands importance of smooth driver -throat transition . It would be ready to go solution for...
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I would have to say that loosing Gabo is a far bigger tragedy than damaging any sort of reputation I might have.About making horns I don’t yet see this obsession as a full time career, and if you ask I just as well would not be able to answer what dr...
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[quote user="Romy the Cat"]What however is very practicable is some kind of sealed TT mat of 2-3 cm tall, fully filed with mercury. It would be 10kG of inertial mass – it might work… The question is how?[/quote]Ah, this is a GOOD idea! Wood would be ...
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Thanks for the encouragement, Jessie. Actually, a much larger "room" is available, but it is +/- "divided" by wing walls and an archway, along with a large side wall opening, that I know from experience would eff up the spa...
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Paul,
Thanks for the compliments.
You are exactly correct with regard to how I use a plotted curve and a sheet metal template... The part I like least is cutting out the metal template... This is because I use fairly heavy metal. Which is neces...
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eyop fellas,Romy wrote: "Here we go! Not we are taking!!! I would not need the S2 tweeter and what it dose now in 400Hz horn is perfectly enough. I would go only for the midbass S2. Something with 6” cellulose diaphragm, low to medium compressi...
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It is very self-explanatory and liked it a lot. The advantage is that it might be used in any rectangular room and the most important that it is VERY simple to build this way. I think that if I have room then I might stop by in a local architectu...
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Below is how my midbass horns feel in my listening room user normal lighting if evening listening. The horn look a bit too dart but they are the same density as the walls in the room. The horns feel darker because the Triangular wall is all white, fr...
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Here is a homage to the Macondo, or at least two channels of it - 400Hz tractrix with S2 and a 140Hz tractrix with Fane 8M. A T350 for HF and an as yet undefined LF solution is to be added. The horns are from Stereo Lab, with the la...
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[quote user="Romy the Cat"]Jessie’s comments about my idea to position midbass straight horns from basement, upper- firing and his warning that the horn will get converted into a giant garbage can made me to think. I did not think about it but it is ...
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Klass wrote :
"...ribs stiffer than sandwich? Can you explain?..."It's not what I wrote, or meant to express. For the same given thickness, a sandwich would be more stiff than a ribbed and otherwise non-sandwich construction (in fact the "ribs"...
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The top 3 are to scale model of the throat, mouth and length you posted above without the horn profile.the bottom image is the equivalent flat pattern.If you were to cut the pattern out of material and sow the sides together, add a ci...
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Thanks guys for all the suggestions.Klaus wrote :"...there are a lot of questions, but if one thinks to much, then he will end up like this lynn olson, pages and pages of endless talk and no horns..."Very true, I need to get cracking, but I'm&nb...
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(I screwed my first attempt to respond by trying to get fancy with the code, so here it is again)Romy the Cat wrote : "...there is another solution that you might consider, that might be viewed as compromise for one-side as might not be view is compr...
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[quote user="Paul S"] The new room is smaller than the old one; in fact it's the smallest room I've used with the DEBZs, and I wondered if this might help the ML2s, if not overall sound quality. I measure the new room at 20' 6" X 17' 2" X 8' = ...
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Romy's quotes in blue:Daniel J. Plach's quote in green:"...The back chamber mechanism is good. Are you planning to do the same in the midbass horn?..."Yes, it will be similar, but more robust; I have an idea for a locking-type seal, which I would pro...
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This is terrific information Ulf. Thank you very much. I won't start builing until early december but will post the project here.
Plan to form my horns from microcrystaline wax first, so i can experiment with throat termination. I have a background...
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[quote user="cv"] Well, the Cogent (Steve Schell and Rich Drysdale) boys are building just such a beast: field coil magnet, (possible) permendur polepieces for >2T, Fs 70Hz, throat - dunno, but at least 3" dia, reduced compression ratio relative t...
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Ulf, are you still around?
I would be interested in an update on this project.. are you listening to this setup a year later?
I have a pair of these same drivers (TAD tm-1201) sitting new in boxes and trying to determine what horn profile, tractr...
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