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That posting bug has been addressed.
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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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What the sonic impact will be? I clearly have no idea. I was slightly desponded and warned that my excremental S2 with electromagnet did not have the “sonic impact” that I find useful.Regardong the Quartopuss... Chris, you're confused because t...
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My first impressions a about the “differences” of field-coiled derived form the time when I ran the Telefunkens war time drivers but at that time I had no reference how the same driver would act with permanent magnet. Also, the Telefunkens are the re...
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Romy does explain things correctly, in his own way of course.Modern electrical field theory has it that the electrical field attached to a cable, stops progressing along the cable for every vector change in the field. Not exactly a digital event but ...
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Romy,
Air core is ok, but. 1. Self inductance in an unmitigated field clumps. You can easily see this by unwinding a hockey puck style air core inductor and measuring the inductance with each turn removed. Never will you have the smooth loss of indu...
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In science, people organize the perception of reality using various theoretical concepts.One of such concepts is e.g. the electromagnetic field, which very successfullyexplains some class of perceived phenomena. The main people behind this conceptare...
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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="N-set"]In science, people organize the perception of reality using various theoretical concepts.One of such concepts is e.g. the electromagnetic field, which very successfullyexplains some class of perceived phenomena. The main people be...
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[quote user="be"]Hi!Let me point out that two field coil magnets with identical iron parts, but different field coil wire thiknesses, will at the same field coil power dissipation produce exactly the same magnetic field and the loudspeaker will hence...
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Hi!Let me point out that two field coil magnets with identical iron parts, but different field coil wire thiknesses, will at the same field coil power dissipation produce exactly the same magnetic field and the loudspeaker will hence have same parame...
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The subject of electromagnetic, or as they called field-coil drivers, popped up at my site numerous times. (Look as it list of related threats). The advances or shortcomings of electromagnetic drivers are arguable, I have my vision, but it is not the...
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I'm probably revealing my ignorance by even asking this, but I'm
curious to know if a field coil ribbon tweeter could be practical. It
occurs to me that if one could be made, it would be a lot safer since
it wouldn't be a black hole for magnetic o...
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I have re-read your post and your tone sugests that field coil drivers wi be used by manufacturers purely for their marketing appeal and not for any sonic improvement, Thomas Woschnick has just taken delivery of a pair of Cessaro Beta's which u...
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Stitch, you do have a talent in visual form,
the image depicts the situation ridiculously accurate. BTW, I took quite a lot of interest to read the
comments at different sites from different people regarding the Mr. Pearson departure. Many people...
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[quote user="cv"] I think the main advantage of the EM is reducing flux modulation. There was a post recently by one of the attendees who went with Feastrex claiming that Dr Kilppel (of famous measurement tools suite) measured one of their drivers an...
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Well, I screw-in today the S2 with filed-coil into my horn. I decided to drive it with 2.4A. I used a regulated DC PS and did not employ my prepared for this tusk 4.2 Farad capacitor: the voltage is too high for my cap. The current gave me a ni...
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[quote user="cv"]I presume this is with the new production diaphragms? Just wondering if the old ones might restore some of the youthfullness which was diminshed by the field coil?[/quote]Yes, if was the new production diaphragms with plastic suspens...
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I think that a stereo type microscope is the choice for looking at 3-D objects, because at that level of magnification a standard, single barrel unit has no depth of field.Best regards,Paul S...
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[quote user="coops"]Romy I have read on this forum that you are not particularly keen on the very low output AN Japan ( and Uk ) cartridges, may I ask the nature of your experience with them , have you tried the field coil versions? [/quote] Keith, I...
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Romy, I presume this is with the new production diaphragms? Just wondering if the old ones might restore some of the youthfullness which was diminshed by the field coil?...
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Hi Romy, Splendid work - much appreciated research this!I know this is totally premature, but if you do find that you prefer the S2 as the flux is increased and hit a current limit for the coil, then you *might* get a flux benefit by using a lower ca...
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Are you decrying the use of field coils per se? A friend has been experimenting with them in a specific utilisation and has had very promising results....
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[quote user="Wojtek"]and especially "perfectionists" markets like Germany. Sound is of a secondary importance. I bet the new driver from Cesarro will be field coil driver because that's what peoplewant NOW. They want "the best" and field coil is now ...
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Hello Guy,Please excuse the rapid fire response, bit short of time today.1)Your comments about the Io cart are most interesting; clearly it ain't about saturation. Here's another idea: if the domains in the magnetic material limit resolution (leading...
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Very interesting… Earl Geddes just posted his thoughts for the Morons at the AA. I do not know is he was inspired by my post of by the completely foolish nose that the AA’s idiots razed around the Cogent’s Steve and Rich experiments but still – it wa...
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In the case of the Audio Note field coil cartridge the field strength (and hence output) was significantly less than that from the permanent (AlNiCo) magnet equipped Io. Yet the performance of the field coil version (Io Ltd) was 100x better despite a...
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In the case of the Audio Note field coil cartridge the field strength (and hence output) was significantly less than that from the permanent (AlNiCo) magnet equipped Io. Yet the performance of the field coil version (Io Ltd) was 100x better despite a...
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It was honestly like "oh a big horn, gotta listen .... nice, who did that, hello, how did you..." .... "lets go outside for a talk". I actually thought to the last moment that they were japenese. Coz majority of eastish industry is, and me as western...
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After several tests of listening and somehow I felt that the best solution is fully closed. The heat is part of the project and not to damage the diaphragm, also the hot air is compressed better than cold and thus distorts less. Even leaving the cont...
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If a magnetic field is static, who cares how it is created? Isn't the main potential advantage of electromagnets one that no one has explored at all - the possibility of modulating the field strength in direct response to the audio signal? So, on...
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Unfortunately I cannot reply to your question, Roman, as I purchased from herr Von Langa a N.O.S. pair of Altec 416-8B 15" woofers.BTW: while in Berlin, last May, Frank Schroeder performed an interesting, provoking "blind-test" using '50s and '60 Tel...
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