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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Remember that at the cone the wave front is not spherical, it is a flat plane. It only becomes spherical after transversing down the horn. This happens because the distance along the sides of the horn is longer than straight through the center axis o...
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Thanks Romy and JLH for your input :::: It seems very likely that in this application (100 - 1000Hz), the return on my investment may be small to nonexistant, and that I may be wasting my time in trying to create a smoother transition :::: Looking at...
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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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JD,In the case of the mid-bass horn, the throat transition does not affect the sound enough to worry about IMO. Due to the narrow bandwidth (100Hz - 1000Hz) the step transition between the woofer cone and horn throat is acoustically invisible. I...
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hi jd*
this homepage will give u more informations abought hornmouth and phaseplug.
http://www.users.bigpond.net.au/ggoodacre/centauri/diy/plugs.html
angelo
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CATEGORIES: 2100 - Mid and mid-bass cone transducers 2200 - Low frequency transduc...
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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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I have a couple of queries relating to the transition from the mouth of the S2 driver to a horn generally, and to a 400Hz or 250Hz horn specifically. The profile calculator that I use for tractrix horn (horncalc) does not take into account the de...
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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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[quote user="jessie.dazzle"]Hi Klaus,
Spec sheet on the bass driver you plan to use here: http://www.greatplainsaudio.com/downloads/515_G.pdf
[/quote]
got it, thx. used this data to simulate in hornresponse,looks very promising. but i know...its ...
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KeithGoto's recommendation is to buy the throat piece of a S150 horn(It comes in 2 pieces).Then have the horn cut to the exact diameter of your tractrix and have a flange welded on.They made a special adapter for my mid horn,but recommended the above...
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Here is the detail for throat of 110cf tractrix
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Temporarily seal off the throats from where the driver will mount, stand the horn vertically on its throat and simply fill the cells with paint. Once full, drain the excess back into the paint bucket, by piercing the seal.Alternatively, use a long, t...
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[quote user="nl"] Within that horn-loaded range, the 210/515 type combo does reasonably well, and produces rather more inspirational midbass than most direct-radiator type strategies. There is a reason why these designs persisted for roughly forty ye...
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jezzie i used this formular for throatsize:St=2PIxFSxQesXVas/ci, m very close, my horn is just 2" shorter.it would not be a big problem to make it longer, but in my small room every inch counts.on the other side, if somebody with experience tells me....
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Hi Chris, all
Yes, about 180Hz, which is why a friend of mine had new 120hz
driver flare rate throats fabricated for his 288Bs , for use with 120Hz horns.
Since most of the drivers out there are designed for PA , it pays to modify them for use i...
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I erroneously referred to the 'throat' of the horn as the 'mouth' at the beginning of the response. (Of course, where ever I noted a dimension of 4" or 7" I'm referrering to the throat of the horn--I haven't settled on the exact dimension of th...
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[quote user="Murataltuev"]Here is frequency response without horn:Here is in my 46Hz horn (green is GOTO, blue is Supravox):[/quote]Perhaps that GOTO hole centred on about 225Hz is to do with using the incorrect throat in the horn? First thing I wou...
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[quote user="anthony"]Perhaps that GOTO hole centred on about 225Hz is to do with using the incorrect throat in the horn? First thing I would do is extend the profile of that big horn so that it reaches the correct throat size for the GOTO units. I...
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Hello Romy, hi all
I can make the horns with any requested throat size, 30cm or 10cm diameter, price is the same- USD 4000 the pair.The wood lathe will be ready probably end of this week.As soon as I have pictures, I´ll post them.Price is for a pair...
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Klaus,
The 515-8GPH were in same scale as the 515G with slightly above 35Hz resonance frequency and 103 sensitivity - a very good candidate for 60Hz horn. The 10” throat? No bolls to go for 9”, how about 8”? I’m just kidding. The throat ...
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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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I've continued thinking about construction since posting my previous laser-cut hallucination (titled "Painless mid-bass horn"...). Thinking mostly about the transition from round driver to rectangular horn... I don't know how...
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Thanks Johan, I got my SG505's and S150 horns, my throat piece is a lot longer than the one you showed above. Why can't they just sell that little screw... along with lots of other "why can't they"...Anyway, I just reread this thread and I can m...
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Hello John,The woofer is Fane Studio 8M and throat diameter on the 115Hz horn is 5.56".The initial 4.5" depth of the throat is made up by 6 MDF pieces with rough edges (awaiting bondo smoothing).I can easily add 3/4" pieces to the throat section to m...
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From what I gather the JBL 2169 driver is an 8" cone speaker with a sealed back chamber. If this is so it was designed for a specific horn. It shall be used in that horn or a very similar one. The back chamber should be tuned/designed for the horn ...
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Painting the horn in my way the old joke come me. Question: how a woman can detect that she is fat? Answer: when she laying in a beach in her swimming suite the people from Greenpeace are trying to push her back to the water. That was pretty much ho...
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Posted on behave jessie.dazzle as his Mac has problems to upload the images, The images and text are his:'************************************ end ******************************
Here are some illustrations of a proposal using a removable trans...
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I was thinking about the throat of my hypothetic midbass horn. This is complex, controversial and it has pretty much no answer, at least in the formeat I ask it. I will share my thoughts with you. Let pretend that I went for exponential midbass profi...
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just got it that you meant the diameters,of course its around 65%. i always calculated the throat-size with the area....i really would like to get a second pair of s2´s but i think right now it would be difficult even if i had the money;-(((if i go f...
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