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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="jessie.dazzle"]Here's what's behind my comment regarding the irrelevance of color: I strongly suspect that the new production diaphragms will come with transparent Mylar suspension. In that case, I would hope they turn out to have the me...
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First of all we need all to understand that all channels attenuators need only for setting up phase of playback live. When the installations are set up properly then it is all not necessary. Anyhow, if the upperbass has less output then you might use...
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Sorry I'm a little late here, but anyway... here's something that may worth trying. Apologies that I can't provide a schematic at the mo - I can sort this out later if you like. In the meantime, you'll need a pen and napkin to help visualise this:The...
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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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[quote user="serenechaos"] Yes, I feel it necessecary to include context of electricity, source, amp, and driver loading, when discussing driver sound even if (as in this case) I have to say I don't really know all the details of what they are--the d...
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In regard to moving coil cartridges, I would say:1. This may simply be a symptom of electricity variability. I would listen for a few days and see if it improves.2. Cartridges not used for a while need to loosen up a bit in regard to the suspen...
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[quote user="Romy the Cat"] There were some educational for myself observations made, in some way saying something about this specific DHT, in some way saying something about Melquiades’ single stage version and the Melquiades’ full-range two-stages ...
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[quote user="noviygera"] What does this mean?
Let's say the OT is 5K:8 where is this loading coefficient coming from? And how
can it be adjusted? If the R(e) of a driver is let's say 12ohm, does this mean
the secondary of the OT must be 12ohms for...
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I've been doing a lot of research on how a properly designed horn works
(from initial Western Electric designs to present day efforts) in order
to get a real grasp of what will and will not work. I've read and
saved hundreds of papers and de...
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[quote user="morricab"] Interesting test you have conducted. Were the responses mostly unflat near the frequency extremes or was there variations even in the midrange? The reason I ask is because if you look at most of the published curve...
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The “best midrange comes from compression drivers”. I see somebody like Haralanov would be very much opposed to this comment. The irony is that I would be opposed as well to this comment. I would say that the best midrange at over 107dB sensitiv...
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[quote user="haralanov"] Your response is a very good illustration of how you redirect attention away from the actual discussing subject and point it to a completely different direction that has absolutely no relation to that subject. You asked me wh...
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i will give you this much - horn loading ribbons is fundamentally not as advantageous as horn loading dynamic drivers. this is because ribbon mass is already close to airload mass (in theory could even be less) and little extra efficiency can be ext...
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Romy wrote:"...a chassis designer told me. It is now possible to buy normal efficiency drivers with low mechanical loss..."Sure it might exist, but I question the application.First, a bit of the obvious:Consider only the driver; not the amps and rela...
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[quote user="twogoodears"]Beside I'm not a Goto eGotist and I own about 7-10 years old drivers, for what I'm concerned their sound is correct, quite lean if compared to 2440 and 2420, thicker sounding - but very, VERY detailed, quick and musica...
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I do not really believe in the ultimate ability of SET amplifiers to drive loudspeakers, at least any loudspeakers. I am not talking about the impedance fluctuations or the inappropriately low impedance dives. Those are well know issues. The people w...
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[quote user="skushino"] Being new to subs, isn't there an obvious danger of over loading this little room with too much bass energy? [/quote]Where did you get this bogus notion? What does it mean: “loading this little room with too much bass energy”....
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Interesting idea indeed and very interesting crossover points. Denmark is generally is very advance country in terms of audio.
The Roundabout people said very little, is anything about their horns. However the is one subject that I do not like in th...
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[quote user="op.9"] That 18 Sound ND2060A looks very interesting to me. And would fit in with my silly philosophy of only using currently manufactured components... [/quote]
That ND2060A does look very interesting. I never heard or even saw it...
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Yes, Petar
I would agree with the most but with horn-loading all compromises suddenly do not get evaporated. The horn is not a panacea as the horn-loading is basically as well bandwidth-limited. In fact for objectivity sake I might say that the dire...
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Part 2 – Description and explanation
Anyone who have ears and a rudimental mind to understand what ears register, and anyone among them who played with MF channels driven by SET, know that subject of SET loading is imperative.
Let take for...
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[quote user="Romy the Cat"] A few years back I wrote somewhere that I “developed” a semi-mathematical formula according to which an acoustic system’s result might be absolutely objectively weighed up. I did not go very far with advisement of this eq...
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Thanks, Jim, and thanks to everyone who replied in direct emails. Summarizing what was advised to me it looks like as now the input impedance of the amp is around 4.5K. That was roughly what I would like to have, though I would like to go even furthe...
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Paul, thank you for your input![quote user="Paul S"]I think with the SUT the "dynamic" loading the cartridge "sees" may swamp the choice of wire metal. Once the loading is dialed in, silver might be nice. [/quote]Yes Paul, absolutely agree--the ele...
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[quote user="Romy the Cat"] I have to admit that the idea of the “second solution” looked to me superbly promising. The “second solution” would allow modifying the amount of 2nd and 4th harmonics on a driver without change loading, volume or inflicti...
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I still say you will get the same "effects" if you current source a low voltage supply. Or, easier, put an inductor in series with the windings after your filter cap.The way I look at it is that the voice coil is the primary of a transformer; the cor...
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[quote user="jessie.dazzle"] Are you suggesting : 1) Running the upper bass horn from a second ML2 ? 2) Running the lower bass enclosures (sealed boxes) from a second ML2 ? 3) Running both the upper bass horn and lower bass enclosures (sealed boxes) ...
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Gregm,
perhaps it is might be my incompetence in SS but I do not see a whole a lot of ability to “tune channels” with SS. Sure it is passable to plays with crossover and volumes but it is possible to do at speaker level as well. With SE...
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Novygera:If you have a transformer where the impedance primary-to-secondary is 5K:8, it means the turns ratio is (5000/8)½ = 625½ = 25. This is the ratio by which the voltage is stepped down and the current stepped up in going from the tube to the s...
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Sometimes it works
Here is a guy undertook the Klipsh corner-loading project
http://myjubs.com/ With whole cons and pros of the corner-loading method in this situation is it possible IN SOME CASES to get VERY interesting bass. Unfortunately t...
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