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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I want to share what I feel is a good application of an injection channel, as introduced by Romy. But this is different and also useful and i can tell you it works and very well. Of course, I do not recommend to use this application in the same exact...
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[quote user="morespeakers2"]I thought Romy being very familiar with the S2 and also familiar with the 288 could quickly simply state a few simple observations between the two or just be honest as say he doesn't know, doesn't care, or doesn't remember...
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Pierre, yes, I understand it. It kind or irrelevant what they destined for and yes, in domestic applications in context of low power we can use it lower. What I am saying is that as we do use it at extreme low range we deal with slightly overdamped d...
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[quote user="cv"] Or build your own outer magnetic circuit as you are saying, retaining the S2 diaphragm, phase plug, pole pieces and throat.... [/quote]
If you read the thread form beginning then you will see that it was my original ultimate intent...
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This is the text that John posted a few years back at Triode Mafia. John allowed me to post it here warning that he have learned more about tapped horn since then and hat his opinion might have changed since then. -- *****************************...
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Hm you are true in the “terra incognita” territory as far as I concern. The preamps are mystery to me. All my attempts to make any decently sounding preamp or even buffer failed. To me Placette was truly God sent and if I got burned that I am looking...
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hm..lots of interesting information to chew on, and by and large, i've had similar experiences with first order crossovers on bass drivers .. this being my experience with a full range amp, and a two way system-- which is a far different critter than...
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My own experiments along these lines suggest that relative motion of the driver itself is a factor, along with attendent augmentation and/or cancellation of certain frequencies, depending on whether the frequencies and/or resonances in question are u...
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"You mistakably took roundness but it was nothing but confidence and luck of my interest to contaminate the thread with another introduction of acoustic absolute phase." Folks, I invite you to look at the record. I introduced AC plug polarity and whe...
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Hi ManiThe UK 240 volt utility system does not parallel the North American 120 volt system - and is also quite different from the North American 240 volt scheme used for household stoves and dryers that uses split phase 120 volt legs to present a 2...
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I pretty sure we are talking the same things, ie
Phase shift = frequency dependent delay - spreads a signal out
Geometric arrival delay is linear phase - delays all frequencies equally (obviously)
I was just hypothesizing that a slightly ge...
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I wonder if you could hang a secondary driver in a dead box, without baffle, or perhaps more usefully, with a shaped baffle and use it to provide the "resonance" effect of many vibrating panals of tuned length and specificshaped radiating areas...
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[quote user="Jorge"] This is something I have been at for the last few years, I have tried a few drivers, at the moment some of my favorite are the vintage RCA MI 1443, yes filed coil and some funny cone diaphragm, they are used from 500 hz to 5 kh...
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"If the horn contour is used in a way not complementary to its contour/length, reflections can cause phase/amplitude artifacts." - RowukRobin, as a horn player, you obviously understand the differences between the horn as an instrument and the ...
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[quote user="deemon"]Hello , Roma ! I think that you can use only a back chamber with decreased size , and a serial capacitor . I think that there are no ways besides ... [/quote] Actually it would be a serial coil, as I need a low pass no...
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Don't worry Romy, I know exactly what you mean. I tend to discount the opinion of anyone who raves about a system's ability to play back patricia barber. Speaking of which, if I were in her shoes, bunions and corns aside, I'd be mildly...
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I have also designed my bass horn to operate between 160hz and 600hz and it will use a supravox 285-2000. It is a 110hz cutoff tractrix horn. However I found out that, there is a modified version of this driver that suits my purposes better. It is by...
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Last night it was a surreal experience, sort of QSound–type experience. I still do not know here will be the exact location of my listening chair, it is debating with 2 feet, and because of this I did not bother to lock the Macondo’s channels in tim...
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[quote user="steverino"]I think my statement " Because we can't map it precisely from the stage to the speakers..??" was on the right track. Yes there is a distortion of spatial information from performance to speaker in the same manner that a ...
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Lx, I am surprised to see your response. You absolutely incorrectly, in my view, look at the data. The files of cause do not have the same start mark. Why shell they? I did not subtract one from another. You did in phase the files and did the subtrac...
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The Purepower state at their site that efficiency of the unit is 89-92% depending on load. I presume that they meant the power factor correction that need to be taking to the consideration. In my case my two 6-ch Melquiades run from two new PP2000. M...
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Haralanov, Yes and no. Of cause no one would deny the benefits of ULF reproduction but the key questions would be: 1) what kind of reproduction? 2) how to talk about it? There is no language to convey the ULF message. The 20K repose is meaningless an...
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[quote user="Paul S"] I ask because I have never seen a single corrective device that offers balanced, quiet, phase-perfect power. By "balanced" in this case, I mean that the nueutral/ground is isolated and re-referenced at -60V, while the hot leg i...
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[quote user="romy"]I have quite rudimentary and not very well performing generator [/quote]That's what I thought. I see a point at the tips of the sinewave, a dead giveaway to a ICL8038 style waveform generator. I wanted to see the input ...
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So far it appears that one needn't look to the TAP for any sort of sonic help. I have been breaking my own "one change at a time" rule by futzing with a new (K&K) phono stage as well as the CD/bypass stuff, and everything I do to/with ...
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Hi thereFor some time its bugging me that compression drivers got a very heavy but odd load of air coupling on the membrane. I saw a scatch here to put ideally 2 Horns on each side of the driveway to balance it. That's obviously not so economically :...
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ltsv38, it is an interesting solution for lower midrange horn. If I use something like this for Macondo ‘s fundamental channel (but of cause spherical) then I would flip the horn with driver up and run the neck longer to accommodate a slower, expone...
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Points about the self-sound of the PH-77 are well taken, not that I'll be spending 8K on anything any time soon, regardless of its "value".My own K&K phono stage is totally Spartan, just to avoid all the circuitry that typically facilitates the s...
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ok here is my first post about anything sound but i rather go straight on it :because i didnt find anything online about it but find something more precious( romy cat web )ok romy here its:after many years of listening to various simple 3way or 4way...
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[quote user="kodomo"]I have also designed my bass horn to operate between 160hz and 600hz and it will use a supravox 285-2000. It is a 110hz cutoff tractrix horn. However I found out that, there is a modified version of this driver that suits my purp...
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