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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hello Romy and everyone here, Thanks again for your thoughts on the large horns. It seems best to start a new thread, as previous threads dealing with the "10-Footer" originally began as discussions of other subjects. Romy, you may want to move previ...
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Here is an interesting, atypical nowadays, attempt to get 45Hz. With massive (not plywood construction), use one diver instead of two drivers, use better drivers and with proper tuning of the back chamber (it is wrong there) it might be a ...
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[quote user="jessie.dazzle"] There may be better drivers out there, but with my level of experience, I doubt my abilities to recognize them. So though it may resemble laziness on my part (remember, this is the same person that will be constructing a ...
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I ran today some numbers for the triangle horns. In the best case scenario I hope my attic would allow me to make two triangular horns 4 by 6 feet. I did some very preliminary math and concluded that 4X6 triangle will allow me to do what I want. Take...
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Klaus,Yes, I assumed that you had found the spec sheet; I only included the link for the convenience of others following the thread.Klaus wrote : "...whats wrong with 9,9"? its rougly 55% of sd? you think, 43" is too short for a 62hz h...
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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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Once again, let make it the last post off the subject of the 5-chals Milq.
I think it make sence to start from 370Hz-400Hz horns for S2, targeting it for 1000Hz. Then the lower bass horn, for instance the 45Hz, however it should have a chamber of m...
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Jessie, there is another solution that you might consider, that might be viewed as compromise for one-side as might not be view is compromised from other side. If to allowed ourselves to close eyes to midbass timing-integration and if the geography o...
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Hello Romy,
My apologies for not getting back to you sooner… Moving to the new place has turned out to be a huge task, but worth it, as this new home actually has a place to work, not to mention a much better selection of recorded music at the local...
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Here is my proposal for an ideal horn system. The concept derives from the really of the horns as I know them, the available park of the drivers, the drivers’ real capacity and from… everything else that I might comment upon if you would not figure o...
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Thanks for the recommendations on crossover points and the image of the rear chamber on your Upper Bass horn...
I've been back into some virtual modeling of this large horn (having made one quite nice MF horn, I've proven to myself that I have no...
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The following link will take you to images showing my construction method for small to medium-sized horns (click on the images... to view the explanations) : http://s172.photobucket.com/albums/w3/jessie-dazzle/400Hz%20Tractrix%20Horn/ Since these are...
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Hello Romy and everyone here, Thanks again for your thoughts on the large horns. It seems best to start a new thread, as previous threads dealing with the "10-Footer" originally began as discussions of other subjects. Romy, you may want to move previ...
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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="jessie.dazzle"]....but are going to be something like 10 feet in length .... I will try to document the process, and consider posting the more interesting stages here on the Cat's site. [/quote]Well, Jessie. It sounds defiantly as a...
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[quote user="Kerry Brown"] Yesterday a friend of mine brought over a CLIO analyzer and we graphed the impedance vs. frequency. I was surprised that the subhorn measures like a ported box tuned to 50 Hz ! [/quote]Yes, this all is very explainable. The...
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Yes, it is certain in what I proposed there is majored disadvantage of having a suspended floor. A suspended is like a bad turntable – no matter what you do you would never be able to get proper lower octave. The idea to have horn firing from ro...
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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 a reasonable concern. Hypo...
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Paul S wrote:"...In any case, I have never heard even a concrete LF horn that did not sound like a cave, a sewer pipe, etc..."I believe you; and this is why I am hoping these LF horns you heard were ineptly implemented.I would guess that the "cave/se...
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Here are a couple of shots of how the inner surface of the new rectangular mid-bass horn will look (shown with driver; an AK151). This model is based on a calculation for an exponential horn.These images do not show wall...
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[quote user="jessie.dazzle"]The thraot size will be 7 inches. [/quote]
Wow, THAT IS BOLD!!!! The 45Hz how from 7” throat – that is very-very cool and very positively-obnoxious.
[quote user="jessie.dazzle"] Yes I have thought about paying someone e...
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I would never believe that I would face this problem. My carpenter measured up all my space and give me a verdict that he can put in there two mouths 4 by 6 feet with a foot and a have between them. That is it and that was exactly what I would like t...
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Charlus, it is not about an expression of gratitude, trust me, I am very indifferent neither to criticism or appreciation. Ironically what you are trying to do is in a way an organic holding a touch of a few audio ideas that I happened to advocate as...
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Hello guy,
Regarding your question : "...What ratio of diaphragm area to throat area did you arrive at (for the large horn) & how did you choose it?..."
The ratio I used for the 45Hz horn is about 65% of the ø of the diaphragm LESS THE SUSPENS...
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Jessie, I pulled posts from Macondo Axioms thread and encapsulated them onto a new thread dedicated explicitly to your project. I hope you do not mind.
[quote user="jessie.dazzle"] This would impose a design that is not round but octagonal. It would...
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Hello Angelo,
Even though it may not be a good idea to use a phase plug in a straight Upper Bass horn, I did find the information educational, and just wanted to thank you for the link. Thanks also to Romy for his comments on the subject.
The d...
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Please don''t waste your time trying to correct the thing, I'm waiting with all my toes tapping for the 45hz 15¨horn projectR Weissman...
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Thanks Romy, I'm using a TAD 10" mid in a sealed box to produce 200hz-800hz. Although I'm fairly happy with it, I'm hoping a compression driver/horn would give even better results. There aren't a lot of ready made options for 200-800hz so I chose Got...
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Greg, I see a regions of concerns that you might contemplate.
TAD 1201 might be good driver but how useable would be the 200/300-800/1000 range? Let pretend that you end up with 250Hz, then what next? You will introduce a bottom octave section but t...
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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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