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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Jessie, the "Horn Free Lunch" derives exactly and specifically from "efficiency" registered at frequencies much higher than those ultimately required from the driver in the horn speaker. The horn is there only to provide "gain" at lower frequencies...
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I have drawn up my 20Hz subwoofer horn in Google SketchUp 3D. This horn is more for home theater than for music. My smaller 40Hz loaded with B&C Speakers 8PE21’s is more musical and articulate. The 20Hz tapped horn is loaded with two Tang Ban...
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Jessie,
I can not speak Swedish and have no idea what they say but here is a Swedish 50Hz horn project. I admit that I have difficulties to like people who design horns in Hornresp but… for whatever it worth…
http://www.hififorum.nu/forum/topic.as...
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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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[quote user="Romy the Cat"]The Supravox was
12” the Goto 4” how did you convert one into another? You would need a 3-4 feet
adopter to do so.[/quote]I used GOTO's converter from dual 4" to aprox 200sq sm2 throat. It is still 2 times smaller than ex...
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[quote
user="koh123"]Upon reflection I forgot that we ultimately listen to
the sound produced and not the beautiful computer simulated SPL profile.
So I went back to old school thinking and re-generated the mid-bass tractrix
horn with the mouth ...
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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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Dear Malinowski,The basic idea for phase plugs is that the sound from all points of the diaphragm should arrive to the throat at the same time. For the midbass horn we only used a simple one slit plug. If you feel up to it you could make a more...
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[quote user="Romy the Cat"]That is my constant dilemma while
I socializing with audio people. Om a surface the question about T/S parameters for Goto is reasonable.
It means now I need to correlate whoever I know Goto user and the people who
know ...
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[quote user="Murataltuev"]
Actually you might get some TS parameters for Gotos if you find right
people to ask. I do not have them but I am sure there is somebody out there
who do. The problem is that those parameters are very much irrel...
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[quote user="Kcct82"]I didn't use John Hasquin's tapped horn design, I modeled my own in hornresp for my TAD woofer. I knew I would only need it up to ~55Hz so I was happy to have it flat from 23Hz-70Hz. The lowest crossover point for Behringer DCX 2...
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[quote user="cv"] Did I ever mention my sulphur hexafluoride idea to you? You fill a horn with this gas, sealing the front with some loose fitting heavy grade mylar or whatever. The horn can then be 44% of the size you'd otherwise need. [/quote] Hm, ...
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[quote user="Blaukopf"] First, Romy describes his horns as spherical. Later he names them tractrix. Are some of the profiles of the spherical wave profile? [/quote]
Yes, they are spherical, wish means not rectangular. ...
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[quote
user="Murataltuev"]Yes, back chamber is very small. And it is
tunable! So, I need 110Hz Tractrix...ok[/quote]
You might tune the Fs by using a acoustically semitransparent
fabric, like Audiotechnica does in their headphones. About the si...
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I tried to do a google image search, but nothing appeared, maybe Romy will share.I got to pondering what benefit having the surface textured may have. It seems the texture of sharkskin for example can reduce the surface suction.From the interweb:"A s...
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Murat, that's a lot to ask from one driver. I thought that any time the "un-aided" driver craps out or acts weird, it's time to think about a crossover, and/or some sort of "assistance" for that driver. The great thing about horns is, they can passiv...
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[quote user="jp"] I assume a simple hole sealed with silicone would not suffice given the amount of pressure build up in the rear chamber? [/quote]
The pressure that builds up in right rear chamber is truly enormous.
[quote user="jessie.dazzle"]… a...
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I recently completed some upper bass horns which I'm now enjoying very much. Sadly I lack the skills of someone like Jessie so my efforts are crude in comparison, but they are working well for me which is the main thing.I already had some old frontlo...
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[quote user="ulf"]Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn so...
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Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound.The improvemen...
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My current speakers are Edgarhorns with the straight 80hz upper-bass shell. The bass never sounded correct to me. The problems with Edgar's mid-bass are well documented at this site and elsewhere. I tried some simple modifications to the crossover...
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[quote user="scooter"]1. Please take a look around this site for some intelligence on how detrimental digital room correction is and why. Romy and Paul are being excessively polite today regarding DSP, perhaps because the weather is nice. I'll be mor...
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[quote user="Romy the Cat"]How many octaves from fs? We are taking about how many fractions
of dB not octaves! Look for a threated:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=2991#2991
…as a good start. [...
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[quote user="Romy the Cat"]Good, I hate to know everything! I just wrote that the poor Murat
with his neurotic audiophile itch is condemned to go brainlessly very soon over
many drivers. A few days pass and the guy have brought to his room an army ...
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[quote
user="Murataltuev"]My 20-50hz TH is not very sensitive. HornResp
shows 95db for Ang = 2.0 x Pi.So, it needs power. My 18W GM-70 SET can drive
them without clipping, but I prefer to keep amp working at 10% of max power to
keep distortions a...
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Tonight I finished two
horns at once. One was a shortened Goto S-150 horn that now has a
Fane S 8M, without back chamber so far. Dimensions are now 1.1m deep, 11cm throat, 75cm mouth. It is replacing the Avantgarde
Trio midbass horn r...
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I've been doing a lot of research on how a properly designed horn works
(from initial Western Electric designs to present day efforts) in order
to get a real grasp of what will and will not work. I've read and
saved hundreds of papers and de...
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I would like to share my 5-way horn project.
The idea was to have full range system, so the first horn built was Tapped Horn.
I got design from Volvotreter.de and was really impressed with performance of this monster.
...
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[quote user="Murataltuev"]I can't go
longer than 2m. Any suggestions about configuration of horn with this length
limit ? May be higher frequency ? [/quote]
Curve the horn. If you Goto channel will not care
any HF over let say 150-200Hz th...
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[quote user="Blaukopf"]
Hi everybody, after reading RomytheCat's Macondo Setup I am very impressed ( phantastic music room ...) . Presently I have no working horns ( they are boxed), just questions. First, Romy describes his horns as spherical. La...
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