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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Klaus,
Spec sheet on the bass driver you plan to use here: http://www.greatplainsaudio.com/downloads/515_G.pdf Just to be clear, mid bass to me means from 60Hz - 240Hz.
Throat diameter : 9.9 inches ?I'm just a beginner, ...
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[quote user="Jorge"]I guess it would be simple enough to add a couple of inches in order to bring the throat down to 4" in order to try the Studio 8M. I have already reduced it temporarily to 3" in order to try the JBL 2490h compression driver. ...
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I except suggestions and critique. I live in Turkey and I am not living in a city, I live at the coast. It is not possible for me to go and experience most of the stuff first hand. There is no one really interested in horns or have multi-way horn sys...
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…and I do not imagine the Santa is bringing me a new pair of horns at New Year. For whatever reasons people think that there are such things as “better horns”. Also, many horn people dream about “bigger horns”. Ironically I personally do not suffer f...
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Klaus,
Thanks very much for the offer to help.
I have a copy of the latest version of HornResp (and also of WinISP Normal and Pro versions).
To be honest, I haven't yet tried either... Been using my "cousins's" (Jean-Michel Le Cléac'h) Exc...
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Hi Romy, all
Romy wrote:
" Are you saying that the JMLC curve could be shorter then tractrix to the same flare rate? "
JMLC made a spreadsheet based on his approach to designing horns,
with that spreadsheet you can design almost any kind of...
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[quote user="Romy the Cat"]I am not sure what you are asking. If you willing to get 400Hz horn into 1” tractrix then it might not be any controversy about the horn’s length, it is already given and the folks from lab.de will know it and will do the r...
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I was rushing when I made the last post. Wanted to share a little more about my thought process and how I arrived at doing another large-scale masochistic audio project. Making a bass horn is a huge risk - the results can vary from exceeding expect...
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[quote user="op.9"] One thing nobody has mentioned is using the room’s corners. Is this a no no? I’ve been trying use McBean to model a horn exiting into the corner – with a middle ‘mouth’ about 1m squared - and using a conical approximation as the r...
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From the perspective of pumping of atmospheric pressure the ALE bass drivers might be more capable transducers. It or might not be so as well. To get 40Hz at 110dB in 5” it would take some excursion. I am sorry but you can’t bend the law o...
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Keith,
I do not see any “O, shit!” effect. You went for 505TT/S150 combination and it is fine. Why after reading my comments you developed doubts? It looks to me that if you do have doubts then you did not have enough rational to select this s...
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Rich,
I think it’s too early to seriously to talk about sound of your driver. As I understand you have no horn for this thing. Your comment that the driver goes all the way unto 8kHz clearly indicates that you used wrong horn before. If you stick a...
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I have no idea what it is but it is something… Take a look:
http://cybwiz.blogspot.com/2011/09/aries-cerat-contendo-reference.html
It is 3 way horn loaded with external LF section, so far so good. Atop then have RAAL ribbon that ...
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[quote user="Romy the Cat"]
There is absolutely nothing in Fane 8M specifications that is responsible for the diver sound. So, what is the purpose to ask about the new specifications?One might think that someone can use “specifications” as an assu...
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[quote user="oxric"] As to why people are interested in the 16 ohms drivers, that is only true of some. The idea is that if the Vitavox S2s are being used, and a single amplifier to drive the different channels, it seems to make sense to go for 1...
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[quote
user="martinshorn"] Indeed you sound a little racist, but i think we all have our prejudice. [/quote]
I do not think that it is racist
in any way or form. Racism is a prejudice against a race in my case it is prejudice
and historic...
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[quote user="Romy the Cat"]
Rakesh posted an add at DiyAudio site, in wrong forum in my view but it is what it is.[/quote]However, in an earlier post, where you suggested that I was knocking 'at the wrong door', you wrote:[quote user="Romy the Cat"...
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[quote user="IslandPink"]Do you favour the tweeter horn to be placed at the top, above the mid/HF horn , or in this situation place the tweeter between the bass/mid horn and the Mid/HF horn ?
To clarify -Bass/mid is a rectangular Tractrix with...
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Have you tried using the Edgar350/2441-combination between the upper bass- and midrange horns, like Romy’s fundamentals channel?
I use a very similar combination (140 Hz and 600 hz tractrix with Studio 8M and JBL 2420 drivers, respecti...
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Erik,
The high pressure zone near the throat does not create distortions; the distortions (the turbulence of the wave’s front) are created right after that zone (according to William Hall, MIT, 1932, though no one said hat he is right). Also, it is ...
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[quote user="cv"] The acoustic transformation's probably done by the time the wave reaches the throat. [/quote]
Yes, it is. If we loom how the S2 internal channel done then it would clearly indicate the it should not be a great tweeter but wha...
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[quote user="i_should_coco"]I guess these would work nicely from 300Hz to ??? Can the S2 really go that low? I've heard differeing opinions....[/quote]
Pete,
How low the S2 really go? It is a little bit complicated. First of all there is an objecti...
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[quote user="Romy the Cat"] 4" throat into 1x1m mouth…hmmm, you hardly
will be able to get from it 50Hz. Even if you go for ¼ size and 2 drivers then I think it is a bit too
small. Also, looking at the picture it looks like your horn open up too s...
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KCCT82,
I have saw at the DIY Audio forum that you are going to the full Macondo-like configuration. There is nothing wrong with it but I am a bit confused with the amount of horns and drivers and with the frequency you change them.
...
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[quote user="jessie.dazzle"]
Romy,
I'm trying to understand your logic in choosing a multi-cell design (instead of a single-cell oval or rectangular 180Hz exponential horn of the same vertical height)... Was this in the interest of achievi...
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[quote user="AJ"]Hello,This is my first post to this site, which I have been absorbing for over a year.A horn project that I have been considering would include either a 1 inch or 1.5 inch throat compression driver into a Tractrix profile horn of...
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[quote user="gordan"]
here's the measurement we've got from S3 on tractrix 260 horn.
the increments on the graph are 1db
it seems useful from around 450-500 to some 1.3k, but it still looks very bumpy in comparison with a number of ot...
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Hello all,Some time ago, I bought a pair of very early production ML2s for an ongoing horn project (see "Note at end").Rather than just let the ML2s sit and wait for the horns to get done, I of course tried them out with my "normal" 89db/watt@1m spea...
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[quote user="haralanov"]I think it is very interesting subject and I’m looking for first hand opinions by people, using properly sounding upper bass horns in their listening rooms. I’m not interested in theoretical opinions – only by opinions, co...
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Most of you know that I built Romy's horns for him. The one thing that you may not know is Romy recently requested additional horns from me. He wanted some 250Hz tractrix horns made for an upper-midrange Vitavox S2 compression driver. Being very...
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