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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Do you even need a horn to run it at 5kHz? The acoustic transformation's probably done by the time the wave reaches the throat. Or is this more just to shape the rolloff below 5kHz? I once tried a hornless S2 as a tweeter; it was quite lovely but did...
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It is depends what kind horn it is. For LF horn the resonance should not be “an octave lower then lowest frequency you can realistically get from the horn”. In fact the common way is to much the assembly resonance to the horn cut off by squashi...
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I remember one live performence the St louis Symphony did on the Mississippi river front,,( Summer Concert) Slatkin,,Of Carmina Burana,, Concert was going fine,,Till the Soprano hit high C,,Nothing came out,,She grabbed her throat,,Hit a lower note a...
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[quote user="Kerry Brown"] When Bruce realized a straight axis horn was a better choice he went with it. Like a good scientist. [/quote]
Ah, did Bruce realize it of he decided to make his customers to Bruce realize it?
[quote user="Kerry Brown"] Th...
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Allo fellas,
Regarding pricing, best if you check with Martin; I know what I'm paying but I had to commission them specially - I know a hell of a lot of work went into making the mould, jigs to support the mould, etc etc. Actually the 340s were my c...
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Hi there
I can see Romy's face when he's trying to figure out Martin's time alignment strategy;0) I have Martin's 204 Hz horn with Fostex 208 E Sig. These horns are to be big to properly integrate with anything. They are OK with Fostex Lowther drive...
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A visitor of my site, a guy who never ask stupid question about audio, asked me a question how to find a correct size of the back chamber of a straight upper bass horn that he juts built. I wrote a reply but then realized that it would be worth to up...
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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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The target range is 40Hz to 400Hz. One JBL 2206H 12" drive (an alternative configuration is with two [2] 2206H drivers). Exponential. Interesting that you mention a J horn, and that the same could be achieved by two horns (as oppose...
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Dresden,
So the first two could actually be just one actual build, with alternate rear chambers? Wouldn't you change the throat size, as well as the compression chamber size? Then arrive at your "optimized" compound horn design. Then yo...
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For those seeking some decent compression drivers that don`t cost fortune, I can suggest to try the Eighteen Sound ND1460A compression driver. It has aluminum dome and polyester suspension and 1,4 inch exit throat. Does it sound like S2 ? Probably no...
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Well, you see, the outer dimensions of the mouth of cause an indications of low end response and by objective evaluation of it is easy to estimate horn’s bass numbers. However, it is very far from “sufficient” assessment. A few years back I completel...
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I am currently planning high-WAF speakers for my sister which have to stand in the corners on the floor. Asking for small corner horns I was told the EV Baronet could be a solution. Simulating it with roughly estimated dimensions I found that the FR ...
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[quote user="msaudio"]If you look at the picture second from the the top, you will see 2 woofers mounted in front on the baffle, notice a 2 piece horn from the baffle. Klangfilm never had such a horn, they would start at the baffle and curve out. The...
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Post #45:
M
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by
be
on
2010-01-01
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"the chamber where the magnet is (would it be perm magnet of electromagnet) is absolutely decoupled from any paths where sound flows"The situation is the same as the backside of a woofer looking into a closed enclosure, and this relationshi...
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[quote user="js"]Could anyone please advise me as to the recommended rear chamber volume for a Le C'leach horn with a throat of 240cm2, mouth of 7089cm2, length of 47cm, cutoff of 160Hz, T of 0.8? I'm thinking of using a Beyma 122Nd which has a sd o...
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[quote user="noviygera"] Every time I turn them off and continue listening without them I notice that something good happens to the sound. It cleans up and becomes more engaging. [/quote] I am glad that somebody got in the end HOW to evaluate an acou...
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[quote user="haralanov"]Ironically or not, I have no practical problems with it, simply because I’m not using big UB horns. My upper bass channels are much more compact – 4 very massive 15” drivers with no horns. Their integration to my main widerang...
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[quote user="oxric"] So, yes, in an ideal world, I would have seriously considered doing something different….[/quote] I guess your definition of “doing something different” would imply reading of 534 pages of BS from people who have no idea about ...
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[quote user="anthony"] Murataltuev wrote:So, the question is still opened: how to get 300-400hz.Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz tractrix horn with a...
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[quote user="Murataltuev"] anthony wrote:It is a compression driver with an 8" cone. If you want authority at 300Hz you will need diaphragm area. The Fane Studio 8M that Romy and plenty of others use for 100Hz up to 1kHz is an 8" cone driver on a 4...
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Generally, I do not think it is possible to put 60Hz horn under MF channel. You have a limited highs of MF and you need to put 60Hz under it. You have no room for circular horn and you have to go rectangular, mach wider then you want it to be. Then ...
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Hi Romy No offense, i really meant we all have our prejudice due to experience. I dono the RCA but i think the old ones didnt have slits or?You can actually see it leaning towards the screen here on that explosion-drawing how its built.Look at the ...
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[quote user="Kerry Brown"]Why preface my comments?[/quote] Because it helps to put your comment in objective perspective. It is internet and people express opinions without any tangible common denominators of reference points. I might make a comment ...
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Hi Romy, hi folksMy intro hello and first post, i just had to sign up. Just found the platform through googlin some hornstuff and came back too often.Especially the resonating oops was the latest topic that really cought my attention as im familar, a...
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Hello all :::: This will be my first post, and I am writing first to thank Romy and the lovely Koshka for making the results of their research available to others, and also to ask for help :::: I am something of a "New Horns Guy" (cringe !), as I am ...
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[quote user="rdrysdale"]Our bass driver has a 12v field coil motor, it developes just over 20 kilogauss flux density using a low carbon steel pole piece. The exit diameter is 4 inches at the moment. The diaphragm is 6 inches in diameter and made of a...
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Romy wrote:"...Let pretend that you play a normal some kind of horn with a lot of air in it. The air drives the driver impedance down..."I'd like to understand this; correct me if I'm wrong:As soon as the membrane of a horn-loaded driver starts t...
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John, I am bit puzzled with your response. I do not know what would be a proper material for cone/dome of diaphragm. The source where “tone” is born in compression drivers is absolute mystery to me and I in my holly naiveté believe that no one else k...
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Looking at phase 3, one of the first things that pops out is the following:Skushino wrote:"...75-240Hz [from a] 12" x-driver [loaded into a] 70Hz [horn with an] 8" throat..."Because they are a royal PITA to make, you'll want to give yourself every ch...
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