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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Actually if that horn would not be bending atop, go for another couple feet vertically, consequentially has a smaller throat and of course has a strong back chamber then it would be a very good J-horn (presumably that the walls and joints are not res...
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"The top response of the upperbass channel is challenged. I do not know why it is – a wrong driver, a wrong curve in J-horn or wrong made filter… "
That sweep mirrors what I hear - specifically tepid and weak upper bass in the presence region betw...
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I'm a new reader of your website and one subject which interests me a lot is that of upper bass horns.As you have noted time and again (with which I agree almost completely, after reading a lot of 'research' [many claiming to defy the laws of physics...
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[quote user="Romy the Cat"] A few years back I wrote somewhere that I “developed” a semi-mathematical formula according to which an acoustic system’s result might be absolutely objectively weighed up. I did not go very far with advisement of this eq...
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Hi all
Romy wrote:
"The next post will combine subject of upper bass drivers and upper bass horns. It will be “THE PROBLEMS WITH HORNS: UPPER BASS”
Please be advised that I recognize bass as something that should be reproduced by 2-3 c...
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Jessie,
Perhaps if you search something in the throat jungle you might fish some interesting results. You see, optimizing the driver to throat transition you might get some HF out of upper bass driver. But besides getting more HF there is something ...
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After living for a few years with Edgar 80Hz straight horns, I've had many urges to find a better sounding solution. I have a reason. Every time I turn them off and continue listening without them I notice that something good happens to the sound. It...
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The best midrange comes from compression drivers, it has that minuteness, transparency and dynamics that no other topology can offer; the main problem with them is that they only cover a very specific mid frequency ran...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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Hello,late, but my experience shows,most construtors didn´t understand simple diagramslike the real and blind part of a expo bass horn,so they take the flare rate not low enough, they take the wrong enclosure material, like PA,and they wonder it ...
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I haven't really thought this through, but if I were doing upper-bass horns again, especially if cut using a numerically controlled router, I might consider making tham oval, which would permit going for a horn with a lower cutoff (larger mouth) whil...
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[quote user="CO"] Ive conducted some test with the smaller drivers because i wanted to know if i could build a compact high quality setup to replace my current fairly large speakers. It doesnt look possible though, mainly because (as you say )the Upp...
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Yeah not much above 4 KHz. But this is a very small part of the music. What hapens if you average it over a longer period ?
What is the amplitude scale btw ?
This could be a big part of why your FM findings are so positive, because of the roll of...
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Excerpted from:http://www.volvotreter.de/pics_plans.htm
Design Basis Summary
total horn length (incl. back chamber) shall not exceed 1,00m
the horn shall have conical approximation of a hyperbolic flare contur with m=0.6
the horn shall have a...
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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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It might not be directly related to the subject of this thread but I would like to pass this comment. Over the years of observing the better and worst in upper bass I come to an observation that the front loaded horns with dampened cones might not be...
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I liked your previous post . A week ago I repaired old Telefunken tube radio (Single EL84 with array of alnico speakers ) with FM band and I'm listening to classical public radio for whole week. Not even once I had desire to turn on "big" system I'm ...
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[quote user="guy sergeant"]One issue that I would consider is that the Tractrix profile supposedly does not lend itself aswell to extremely low frequency horns (being too short) as other profiles in particular the Hypex (Salmon) shape. [/quote]
Yep,...
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Re: the guy from “Enjoy the Music :Nice to finally see this. Romy wrote:"...Do not forget that I have a LOT of mid-upper-bass tool in disposal. I have 6dB extra in my current upper-bass horn and I have high-pas my injection channel at 120Hz…"6dB extr...
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Have you considered the opportunity of raising your upper bass HP crossover? How high do you plan to use your mid bass horns? If your mid bass is comfortable playing up to 280hz (or whatever the right freq is), you can use your upper bass horn to p...
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[quote user="jessie.dazzle"] Assuming you go ahead with the mid-bass horn project: If you decide to run the woofer towers along with the mid-bass horns, it is logical to assume they'll produce much of the range produced by these new horns. [/quot...
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Since having replaced the 16 Ohm drivers in my upper-bass horns with 8 Ohm versions of the same driver, I gained enough upper-bass output that it is now possible to run all horns from the 8 Ohm taps (I was previously running upper-bass from the 16 Oh...
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[quote user="skushino"]Have you considered the opportunity of raising your upper bass HP crossover? How high do you plan to use your mid bass horns? If your mid bass is comfortable playing up to 280hz (or whatever the right freq is), you can use yo...
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A little update : Reading some recent comments in the "Configuration from Italy" thread: http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=12605#12605 prompted me to share what I've recently done. Yes its an obvious thing to do, but it took...
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It might not be directly related to the subject of this thread but I would like to pass this comment. Over the years of observing the better and worst in upper bass I come to an observation that the front loaded horns with dampened cones might not be...
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In reference to:
http://www.goodsoundclub.com/TreeItem.aspx?PostID=1414
I had recently a guy in my listening room and he asked me if it would be possible to get the 300Hz range in the way how it sounds in my room but without using those larger uppe...
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First: Anyone with a pair of 8 Ohm Fane Studio 8Ms for sale may contact me (contact info available by clicking on my user name in the blue column on the left of the page).In answer to Romy's comments: I agree that there is a deterioration in sound qu...
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[quote user="jessie.dazzle"] What really surprised me was how good everything sounded with no filter on the upper-bass horns, and all drivers connected to the same (8 Ohm) tap; sure I'm getting too much mid-range from the upper-bass horn, but its...
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I haven't really thought this through, but if I were doing upper-bass horns again, especially if cut using a numerically controlled router, I might consider making tham oval, which would permit going for a horn with a lower cutoff (larger mouth) whil...
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