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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Josh, I do not have a
definitive answer to this question with witch I feel comfortable. I need to say
that I had a multiple experiments in multiple audio fields and I always felt
that excessive or too limited magnetic force is not always complimen...
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I would like to thank you for taking the time to give me a very satisfying answer and explain in detail your views on the whole subject and give a little more insight in to how you do things. Yes I suppose I really knew all along it was coming and w...
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I asked my Japanese speaking friend to translate for me the information about the tweeter in that Brazilian installation. It is JBL UT-045Be, I never have seen/heard it, and so I presume many others… 25mm beryllium spherical diaphragm, 52mm circ...
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[quote user="be"]They mention an intricate back chamber for the high frequency unit, maybe thats the primary function of the tube, apart from positioning the unit relative to the rest.[/quote]
I did not read any their descriptions and I do not know ...
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Jbl new Dual-Diaphragm Dual-Voice-Coil Compression driver:http://www.jands.com.au/support/product_support/audio_technical_materials/audio_product/jbl_d2_driverhttp://www.fohonline.com/current-issue/72-product-focus/6378-jbl-professionals-revolutiona...
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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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be careful here as mouth size is defined not by what you input, so much as the acoustic space and performance you want. The throat size can be fiddled with if you're careful but there's not much one can do to shrink the mouth. On a 'bass' horn you ca...
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"Older" Schoeps and Neumann microphones have a major diaphragm resonance below 30kHz. This can really screw with a digital recording because of aliasing. Newer generation microphones have the resonance over an octave higher....
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I just posted yeastoday the post above and have got already a few emails asking about the “new” ways that I am planning to use S2. OK, let me to explain what is going on.
The default Vitavox S2 driver comes with thier default aluminum diaphragm with...
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Romy,Are you currently implementing "nominal" 3200Hz x/o on the mid range channel S2 using a cap at the driver? I know this works nicely to ameliorate the "secondary" resonance of the plastic edged diaphragm.Reason I ask is because things may not wor...
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Hi ZakoThere is a slit that is not vissible on cut away drawing, it is located right next to the junction of the speech coil former and the diaphragm.Rgds....
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Yes, there is a Radian replacement diaphragm for original JBL phenol ones. It's a 4" voice coil, aluminium alloy dome with mylar suspension. Looks good on paper but I don't know if it is good. The retail is $210, usually goes on Ebay around $160.So y...
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Jessie, 45Hz horn with 6”-7” throat around AK151 driver is from my perspective is the best thing might be theoretically built around a cone driver. I really envy of you and if I had room I would unquestionably go for it; this is why I keep a pair of ...
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Hi Romy,You won't get much out of reading their site... for example the 555 clone says:100% original size100% 2" original diaphragmtested against originalresponse 600-7k, 6W7V/1.5A supplyand when you click on "more info", it takes you no where...Rega...
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Using an S2 above 8Khz or so is well into its breakup range. I would consider either a 1" exit/2" diaphragm driver or possibly a bullet tweeter that is comfortable down to 8K or so....
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The odd thing about the paper is that they do not try to show their initial design could actually be better than the commercial offering. They could have improved the measurement of their device or else exposed the Sennheiser diaphragm and measured i...
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Speaking to Mr CV the other evening he admits to having ordered a pair of the T500 mkII with magnesium diaphragm . With luck we may have a report from him on their performance within 5 years .MJ...
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Hello Romy,I don´t know how much sensitivity you can sacrifice, but maybe the Visaton Ti 100 could be worth a try. With an EBP of 155 it should be more or less horn-suitable (I didn´t simulate), it has a horribly undampened titanium diaphra...
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Thanks, Kerry. It was interesting. I never used neither RCA1428 driver nor it’s clones. I heard them I think once at Oswald Mils. It was for sure a pleasant midrange but it was nothing else wothe attention in there, so it is difficult to say anythi...
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Romy,
Why preface my comments ? I've had the same system for 10 years basically. I do use digital crossovers but the 'Class D' NuForce amps are not digital at all. And the NuForce amps don't sound like stereotypical Class D amps, they are very quie...
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[quote user="Romy the Cat"]Here is the list of the thing to do with Vitavox S2 in order to use it in 4-ways installations. The S2 must not be used in 2, 3 ways systems. It possible to do with S2 whatever you wish but pretty much any other way to util...
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Ok, I give up...I'll keep TH separated.DBA concept is interesting and I don't understand why it is not common in Home Cinema or studio installations.In my case I'll consider to make double TH - one pair in front and position at 1/3 and 2/3 of wall wi...
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Interesting point Romy. I wonder if using something like a photocamera iris diaphragm just in front of the tweeter would allow for a quick and "non invasive" treble adjustment. I thought of this when I recalled how tweeter response is handled by the ...
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I have been trying one of Spiers Robertsons, rolling air diaphragm platforms under my GPA, subjectively it does improve. ass, also tried the Accurion activeisolation,and had a chance to measure the with and without performance.Interesting results,htt...
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[quote user="anthony"] Romy the Cat wrote:Here is the list of the thing to do with Vitavox S2 in order to use it in 4-ways installations. The S2 must not be used in 2, 3 ways systems. It possible to do with S2 whatever you wish but pretty much any ot...
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is the compression driver problem not solved by using multiple drivers all feeding into the same, relatively large throat, eg four 2.5 inch drivers into a 5 inch throat? The idea is that sensitivity to reactance will be much less at lower excursions,...
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Titanium diaphragm drivers that are completely free of the titanium nastiness (you can believe me, I usually show strong allergic reactions to it) are the Eighteensound drivers with titanium nitride coating. I heard one in the Duevel Sirius....
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[quote user="Andy Simpson"]Usually, this is a _time-domain_ artefact of microphone diaphragm resonance, made worse by excessive proximity. [/quote]
Very interesting!
[quote user="Andy Simpson"]Then, finally and most horribly, we have the brain, wh...
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Post #73:
..
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by
be
on
2010-02-27
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Romy wrote:"However, the diaphragm in the small JBL 2420 driver is full metal (correct me if I am wrong) and there is absolutely nothing in that driver that might be soften mechanically."The speach coil former seems to be made of some kind of fiber a...
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Interning, Johan, looking at the pictures, pictures at the middle pictures, it looks like the diaphragm is surrounded in some kind of plastic cocoon. Is it how it is doe in Goto or is it just a problem with the given phonograph? The Cat ...
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