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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Yoshi, I knew Frank Reps WAY back, in LA. I have talked with him in the last few years and know a little about his drivers, but I have never heard them.It was my understanding that Frank used the AER cones, or he OEMs them from AER?In...
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[quote user="morricab"] Used Wilson X1 Grand SLAMM. Not the best speaker but dynamic like a horn and less colored than most horns. Use with good tube amps and it makes a superb sound (with 95db/watt sensitivity and an easy load 30 watts is probably s...
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Mark, what is it exactly that you have heard from the S2s that attracted you in the first place? This is important, I think, because this is what you have as a starting point, to work from and to use as a reference point as you develop the soun...
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The things I like best about a good wide-range drivers are coherence and immediacy; like nothing else I know of.But awareness of the limited range (certainly not FR), dynamics (certainly not natural on most music) and any res...
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Yes, the Dresden’s talk about 40Hz horn and 90Hz horn as the similar horns, particularly if he does not want to "cheat", stroked me as odd too. 90Hz horn is a nice a manageable 40” piece of furniture. The 40Hz is the monster in a house and a good rea...
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Dear Romy Chapter 1 in the audio cyclopedia, you should read it because you are the won who lacks experiance when it come to building a sound system. #1 from were you listen to system from you should be able to look down the thr...
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... to better express myself, with every needed nuance... Roman: I never wrote I'm able to time-align my speakers, I only told you I quite recently began "moving" drivers and horns as I never did in the past few years, NOT simply looking for a practi...
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There are a couple ways to look at it.The project could be taken from the same sort of perspective as Great Plains, id est, simply new manufacture as a replacement for a 'historic' piece of a equipment. If it can sound close enough to the original th...
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Romy's comments in blue :"...Interesting, as all my drivers, the AK151 and K15/40 are high impedance (15R-16R, DCR around 12R). I do not see a lot of difference between AK151 and K15/40..."Apart from the color the baskets were painted (silver Hammeri...
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Paul, I am no expert on tapped horns but I think the main (40 year old) principle is that you join the back wave of the driver with the front wave, now in order to have the 2 wave fronts meet, the back wave should travel a certain distance depending ...
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Hi Amir,your english is just fine.I think that there is an additional factor that your formula needs. Sense of pitch is not determined acoustically by "Q" unless we are talking about pure sine waves. When we add the overtones found on real musical in...
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nope. i truly believe it to be one of the best and definitely without argument most innovative speaker designs ever made. sorry if you don't see that.you need to learn more about them tho, because you didn't even realize what drivers they used from t...
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The closest to date I overlapped cones and horns myself was waaaay back in my time with Altec A7s. But I have since then and up to now heard many fine "hand-offs" from cone to horn, and my current project speakers hand-off cone to (very fast/short) h...
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In our experiments, the more power we threw at the A7s, the better they worked. I heard some of the original "theater" version Altecs playing with their original "dedicated" Altec amps, and these sounded considerably better; but I never got ahol...
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[quote user="Jorge"]I tend to like drivers with plastic suspension. Radian makes retrofit diaphragms for JBL with plastic suspension, maybe they will help you achieve the tone you are looking for.
Extensions are easy to machine out of aluminum, eve...
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The whole notion of the de Charlus’ quest I find to be very interesting. Charlus feels that only use horn topology and compression drivers is able to deliver “superior” audio result, at least it was his experience. I do not feel that horn topolog...
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There are a few at least theoretical backdraws for the Array in my view.Of course having a lot of different drivers playing at the same frequency implies that all of them should work in perfect unison, if one starts lagging a little bit it will mess...
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Romy, Is there a consistent effect from too large/too small and how is it analyzed? Working on a new horn that I had turned by a fellow in Hungary and have made my back chamber so that I can easily manipulate the volume but have no idea of what to e...
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Dominik, in terms of technology advancement, it seems their new driver is better than their other models. But despite this, I’m not sure their transducer engineer knows how to make the drivers to be valuable in terms of sound/tone. I’m saying that n...
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Kerry, from what you have said so far, I am not surprised that you have gone whole-hog digital. I see that yours is an HT system. The first thing anyone here would say is, physically time-align your HF, although I suppose you "could" do that with DEQ...
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Have been playing with the Dannoy’s for four weeks now and they have significantly improved. Using my Trinnov pre-pro to see and adjust the parameters, i can answer Rom'y points.1. Frequency response: combined with a JL f113 subwoofer crossed over at...
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Jarek, don't worry about me spending too much time trying to figure out the Dannoys. For one thing, I've already spent several decades charting vintage and newer "special" drivers and sound. For another, I am already years into my own speaker project...
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Sounds like you have your system in your room the way you want it. I am looking for a ULF solution that has some flexibility, something I can use in a different room later without starting over. I've been thinking for some time about DSP for ULF. ...
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I must be missing something - or not be ready for this yet. Here are my understanding problems:1) he starts with the "left" speaker and searches for the best bass. I would think that one should search individually with the left and right and pick the...
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Paul S wrote:"typical "stereo" L and R separation is mostly an engineering hodge-podge". I do not disagree with that statement. I do feel the major advantage of stereo is not "stereo", but the separation of parts of the information in the signal ...
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Herman, I agree with the root idea about "dissimilar" materials for drivers being a problem with respect to "pitch" as this applies over the audio bandwidth, and here are some more thoughts about this subject.With Robin's explications, it is easy to ...
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If to compose oneself, the Reality is a restless, moving awareness that does not stay satisfied. How much is "improvement" and how much is change-for-itself is not so easy to judge at any given time. Horns or direct drivers, we want to create and r...
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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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Your point about relative levels is well taken. Still, the typical concert grand piano, for instance, does about a 27 Hz fundamental, as I recall (and certain pianos go rather lower), and some other instruments are not far behind. If to simply low p...
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