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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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.... in home systems for Room correction and general system EQFolks,This is from my own Yahoo group, but may be of interest here....Since writing this I have in fact changed my speakers to dipoles and do not currently use a PADEQ (it will return thou...
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Thank, Manolis, it did address some concerns. I think I even know what you did with the MF driver. You were able to get 50Hz out of this looks like horn? This is impressive. The boundaries-loaded horns sometimes allow doing away with the horn siz...
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Moron it is then...Anyways, seeing the back chamber of my midbass horn, you would say that its way to big, no? And you would recommend me to proceed with a similar tuning process as you describe in this link?http://audio-db.info/AudioDB/BazaPraktiki/...
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II would like to pass a word of warning about the C-15W driver. I do not know this driver but it looks like it has dual voice coil. This might be a hell or blessing. On a paper the idea sound very interesting but unfortunately when I seen it it never...
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[quote user="Romy the Cat"] However, do not use word “brake” as it if from the words of mass-centric drivers. Horns are not about mass and exertion but about velocity and consequential pressure, so in horns there are no brakes but rather damping over...
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To me the big green drivers in the midbass horn look like old Siemens Klangfilm or Telefunken (or other German manufacturer) 10 inch units. Maybe 12 inch... I had a pair of 8 inch Klangfilm once and they do have interesting tone across a couple of oc...
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[quote user="green heron"] I'm happy with my results midrange on up at the moment, but I'd like more slam from the midbass horns. The backchamber may be a bit too large, so I'm planning to experiment with the cabinet volume. Do you have any su...
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That's horribly disappointing for now but I think Jessie is right.Firstly, as you essentially said, I wonder if the horns are coupling into the room such that you actually have much bigger devices than you thought... you are actually sitting inside t...
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[quote user="Romy the Cat"]1) The foams from back chamber pushed itself through the window of basket and touched the driver cone. Sonically it is very likely but knowing HOW I did the thing I think (hope) it did not happen. Also, both horns hav...
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Since the 8M is now no longer to be had anywhere, for love or money (delighted to be contradicted on this), would people care to suggest alternatives for precisely the use Romy puts it to: driving a round, 3-4 inch throat, upper bass horn? I know it ...
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Thinking further about my "Hanging" inverted Midbass J-horn presented above I asked myself: where is to cut this 12’-13’ horn hypothetic horn. Initially I thought to do it in order to keep the parts smaller to be able to fit them through the doors an...
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[quote user="skushino"]What is the purpose of having the flexibility to re-configure from straight to J horn?
This thing will be large and massive enough that physically moving it from one configuration to another will be difficult and require...
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Audiofilofine, if you do not mind then can you name you posts more identifiably and not with the same name? On the subject: I do not think that drawing shall be important to you. If you build as you say 20Hz horn then the design of the horn will be ...
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Ok, the 7th sections are almost done, it will be 3 joinable sections: 7+6, 5+4+3+2, 1 + back chamber. The first two will be glued permanently what the horn will be upstairs and the last one will be disassembleable, if I decide to go for smaller mouth...
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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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Well, I have a theory that the rough surface may be helping to attenuate multiple back-forth axial reflections, but from what you say, it may be that it results in - what's the proper term? - irregular as opposed to laminar flow at the surf...
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Here is my suggestion:1. Generate a flat template for an oblique cone, easily done using the free software here: http://www.tyharness.co.uk/cones/cones.htm2. Roll a sheet of black clay, at the required thickness, and cut out the flattened cone shape....
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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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There has been some changes, so here is an update;38hz - 160hz - TAD 1601b (2 on each side) - Ported cabinets160hz - 600hz - Supravox 285-2000 Hornfabrik edition - cf110hz round tractrix horn600hz - 4800hz - Radian 850pb 2" cd - cf200hz round tractri...
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Here is a picture of my upperbass horn’s back chamber. The actual chamber is approximately twice smaller as it patched internally with construction foam (a wonderful John Hasqiun invention). The dust cap of the driver is where the weight is hangs dow...
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[quote user="JLH"] Other than being completely ridiculous in appearance, this guy didn’t even bother to time align any of the drivers. [/quote]
This exactly what is the most fun in that system! Sometime people do not do the time alignment because it...
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Well, when we are talking about Cogent we need clearly differentiate two things: the Cogent’s drivers and the Cogent’s installation. The problem is that since Cogent’s drivers are something so called “compression drivers” then their performance might...
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[quote user="Jeffrey Jackson"]........he has listened to Goto's advice quite a bit.. they have very strong thoughts on how to do things... some you will find humorous, others you will agree with... they beleive that electronics don't really matter.. ...
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Here's how I'd make a hard rear cover/rear chamber.I describe the process in detail, as it is a good investment of my time; I expect to have a similar condition and requirement for my own mid-bass horns (intended for use with AK-151s).This approach c...
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I think the usage of Romys Injection Channel has misguided you to think it was implemented because of a certian lack of tone or some sterile sound, nothing of the sort, I cannot blame you for not having listened to Romys system, but theo...
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[quote user="Romy the Cat"]With lower then rate frequency Fs is also
is very simple. If you refuse to make own experiment and confirm the unloading
the bass from horn make difference then try to look at the subjects purely intellectually:
why you ...
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I’ve been harassing my horn-maker for quite a while with an idea to go for straight, no-cheating 45-50Hx horn. We discussed it countless times and sometime probably we would go for this, and particularly if I figure out how to resolve the delays prob...
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[quote user="jessie.dazzle"] There should be no danger in running the S3s down to 500Hz; I am currently running a pair of S2s (same diaphragm as S3) down to 450Hz, 1st order, no problem.
The system is in a room that measures around 80m² with a 3m-h...
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In the linked there above “Barn Conversion - James' Project” I have expressed my attitude toward low frequency bass. I certainly not “against” bass horn it but have “concerns”. The “open bottom” concept that I invented for myself is always make me to...
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OK, as now, I see no problem to conclude to the project successfully in 1-2 weeks. The horn give much less problem then was expected, as my progress with crossover going on the midbass horns sound more and more disciplinized. Today I will be expl...
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