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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I would like to share some ides what I would like to do in my monitor project. This are just intention and I did not try to put it all together. Probably I will do it with the next few weeks.
I’m planning to use the Celestion SL-600 enclosure ...
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[quote user="N-set"] Romy, would you elaborate on that more? Looking at his formulas it looks like higher mass gives lower resonance point, which is I guess desireable?[/quote]
Yes, the resonance point go lover but also the ratio of contributi...
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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="hagtech"]Ok, I am again confused with the terminology. You seem to relate reflections (indirect sound) to orders of distortion. That is, 2nd order distortion has something to do with the first reflection of sound. I see...
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My perception of Srajean's credibility was affected when I learned that his "first and most important spiritual teacher" was Osho Rajneesh, a man perhaps most notable for having followers who decided to murder 750 people in Oregon in order to win a l...
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[quote user="guy sergeant"]I meant the upper end of the LF horn response. Firing it downwards at the floor as they do and then expecting good performance at 200-300Hz in the listening position is a tall order. There may also be some confusion where ...
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All below is written by Thomas Dunker
Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...
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[quote user="Marc HENRY"]hi all,thanks for your interest !yes the frame is curved, HF and MF are //yes there is a phase plug in the bass horn. This cover 80-300Hz.there is a separate infra-bass section, covering 20-80Hz.images of the bass phase p...
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My only targeted listening experience with DSP has been bad, including "modern" "reinforced" concert halls.I later found out from one new-ish concert hall sound guy that they always immediately "digitize" the sound specifically in order to "process" ...
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[quote user="Romy the Cat"]The concept of self-testing boot cycle is nice one but it for sure could not be done during the amp booting. Some tubes do need to warm up and reach the cruse temperature in order to be tested, some do not. Some tunes (lik...
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Romy, I appreciate that this is an old thread now and that you may not remember everything from your time developing these amplifiers, but I have a (hopefully) simple question about the upperbass crossover in the schematic above. All other channels ...
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Romy,I took your advice and now have a single 2440 driver. At least i THINK its a 2440. On opening it i find that it has a phenolic diaphragm! Have I been sold something else? I was not aware that there were ever any phenolics for the 2440 family. Wa...
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This is our first offering; we are indeed working on another two higher priced models. One will have an additional channel on top, the other one will be front horn loaded down to 40 hz. Optional finish and colors, both for horns and supports, a...
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Thanks, Roman... I strangely (?!?) feel me like a schoolboy at his first primary schoolday... virtually ALL my (limited) audio knowledge, vanished... and I'm dealing with brand-new problems, like a crossover with fixed slopes and cut-off frequencies ...
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Oh, good, it's you, N-set. This is a COOL idea! Maybe you can set me straight.The way I see it, to be significant, the full-spectrum sound recording alone would pose its own challenges, for sure. And what are the parameters for linear measuring, a...
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Roman,Well, what can I say.Different parts sound different, like it or not.I agree the topology needs to be "right" first, but once past that you will be surprised just how much difference parts happen to make.However, cogitating about your current A...
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[quote user="oxric"] "The Macondo’s Bass Channel is line arrays. The arrays employ religiously-sealed enclosures with six “spotted” Scan Speak 25W/8565-00 drivers per channel... " Clearly you had written this at a time when you did not really underst...
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Is there any abstract value to going for a preamp with a stronger output if you're using a passive xo at line level?I'd prefer to answer this question myself but i really don't have the budget to be swapping amps.How does a PLLXO interact with a non-...
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It is not unknown work to me, I never was hugely thrilled about it but I heard it today for the first time that I suddenly turned to like it. Ironically it was the performance today that I liked but rather it was a bliss to me, an inspiration why I d...
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Hi Kodomo-You have made an ambitious undertaking. Congratulations to a brave decision.Can you please elaborate a little on your TAD implementation. I have used one on each side ,in 3 cuft sealed cabinets, first order from 60 to 150Hz, blending gent...
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Sorry for that, the first tapes were pretty good and I got excited, some of the latter ones, well.I do not consider it a live format, but I want to have a few good tapes mostly as reference of playback.About digital I am happy to say that direct co...
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First, I cross over the Dannoy's at 60 Hz., fourth order Linkiwitz Reilly to a JL Audio f113 subwoofer. I get about 89 dB before the cone starts distorting. This is where the surrounds come in. As in the concert hall where, depending on where you si...
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For the past few months, I’ve been looking for a solution to a problem – how to recreate through speakers the same sound that I get through headphones. Why did I embark on this quest? Well although I’m quite happy with my headphones, I miss being...
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This weekend if I have time I will be doing the testing of my driver deciding which one I will be using. The framework of testing will be the following: a single driver, closed at 150Hz first order, mounted in infinite baffle and working along with M...
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Again, I do not agree with all notion of Rubber sound that Haralanov seeded. I can not speak what was in the situation that “be” described and 400Hz crossover. I do have the 8” version of 25W driver (I think it is 21W) and my feeling that it sou...
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i have vitavox S2 and also altec 288c.i am trying to source the fane studio 8m,just missed a pair by 1 day on uk diy.until i get the fane and make a horn for it,i will use altec 515c in vot.i also have jbl 2405.yes i will definitely build the full ra...
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Could anyone here get through the whole spiel? I found it rough going at first and then impossible once I saw the pictures of the product. The immediate sense I could not escape is that it is (at this point, anyway) more about a "total marketing pl...
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Paul, I would not touch this beast without modeling it firstat least to see if the electron flow is +/- what I'd expect. The eventual sonics are of course hard to predict form the model FFT's. The only hints are some posts at DIY audio and few words ...
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[quote user="Romy the Cat"]1) HF channel. A120dB-sensitive hemispheric array of compression drivers, with a dispersion approximately 180° x 230°, sitting deep in the transition slop. First order high-pass.[/quote]Hi Romy,Why such a wide angle? T...
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The least offensive result I have gotten from a ported speaker was closest to the yellow option. I built a pair of small monitors with ports on the top purely because it was the only way they would fit. I cannot reasonably e...
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