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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Brooks Audio is a reseller somewhere in Utah, I think he is Ale Acoustic US rep. Utah is reportedly a some kind region in US between Massachusetts’ Tanglewood and California. It looks like Kevin Brooks is moving and he is selling his Acoustic Sys...
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truth to be told, i'm so far from building a horn for S3 that the plans may change. the drivers actually haven't left a previous owner yet which makes me a bit nervous. but i understand you presume a short opening horn like expo would allow a more me...
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[quote user="Romy the Cat"] your diver might be a very good MF diver but it does not go to region where the “tizzing” live.[/quote]You may not believe me, but the driver start to roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intent...
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Was invited over to Romy's today for a listen. In the last two days, he made several small but critical changes in the time alignment, crossovers, and room damping, and the sum of them has brought his system up by several notches producing the best a...
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Hello,I just logged myself in so first of all: Hi Everybody ;)Few days ago I aquired a pair of very interesting 3way horn speakers which seem, as I imagine, to ba an ambitious DIY project from the past. These are basically the Altec Vott A7 replicas ...
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[quote user="anthony"]My RAAL Lazy Ribbon has ended up needing a 1st order high pass filter to match the midrange S2 which is so much more convenient than third or fourth order as initially intended.[/quote]
In my case I found that RAAL ribbon wit...
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[quote user="Romy the Cat"]
What is the difference in audio? You spend day of you live in your listening rooms trying to make that cable elevator between your phonostage and cartridge to “sound better” and someone after listening your setup inform y...
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I usually tell people the basics, then add "If you hear a set of speakers that you really dig, then by all means buy them. If they make you happy, then they are just fine".IMHO, there are so many variables to what people like and dislike, it's almost...
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The answer is dynamic balance. It's objectively easy to prove too. Let's say you are in a room behind a closed door. In the other room is a musician playing an instrument. Even an easier example -- a person talking in the other room. You know that i...
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Since no one replied, I thought of narrowing down the problem. I need to make a horn that will cover up to 600Hz. I will guess that it will be 150 to 600Hz. But better yet 90 to 600Hz. Is this posssible. Do I need to make a compression chamber? Do I ...
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Ok. I have some very good results to report. I've been stuffing my midrange horn (250hz lecleach with BMS4592nd-midrangeonlyversion) with some 20-hole-per-inch open cell foam. As per Mr. Geddes. Its not coming out. 1. I can now play louder with no sh...
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I have no idea what this Tweeter is. The reference to the aerospace aluminum alloy and Lamborghinis very much suggesting that the tweeters are crap and the guy who make them an idiot. But will not be too fast with conclusion and I am accustom to see ...
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The mini skirt analogy is a great fit. That is my experience.Or maybe like that stunning girl has small breasts and one has know the joy of a good handful. There are ways for enhancement and while one could get more, the girl is no more beautiful and...
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[quote user="skushino"]Have you considered the opportunity of raising your upper bass HP crossover? How high do you plan to use your mid bass horns? If your mid bass is comfortable playing up to 280hz (or whatever the right freq is), you can use yo...
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I am getting a dedicated third amp to drive my upper bass channel and I just figured out that when I go with my midrange channel at the line level passive filter then I would need 0.0000302uF capacitor against the amp's input stage, that means… 30pF…...
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I've been thinking about this matter for a while but could not find a better excuse to formulate my theory then in this topic. My simple theory is that if we reduce our concept of "music" the more fundamental concept of "sound" as point of reference ...
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[quote user="rowuk"]What connection do we have considering the spectra of signals on the mains and sound quality? What data do we have on what part of "mains contamination" affects sound quality?.[/quote]No body knows answer of This question and you ...
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[quote user="zanon"]Romy:I was not aware that manufacturers of multidriver system let you attenuate individual drivers. I guess if you multi-amp, then you have control at that level. I have never encountered such a system so I cannot say, but if it i...
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[quote user="Gregm"] It's better than a Marten Supreme because the mid is cut off @500Hz whereas Marten cuts it off at 1,3kHz "where the ear is at its most sensitive". Note: they must be referring to latest technology ears -- not the tradi...
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well i never thought i would be opening such a pandora's box with this combination.firstly,the drivers have the plastic surrounds(whew,lucky!i know the diaphragms are potentially harder to source than the drivers)what indicators or criteria would mak...
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[quote user="Romy the Cat"]Are any of those new tubes besides the Chinese tubes are single plated?[/quote]I believe they are all single plated.
[quote user="Romy the Cat"]I have bought some very nice 2A3 and 6A3 double plated from 1942 and 1944 an...
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For those seeking some decent compression drivers that don`t cost fortune, I can suggest to try the Eighteen Sound ND1460A compression driver. It has aluminum dome and polyester suspension and 1,4 inch exit throat. Does it sound like S2 ? Probably no...
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[quote user="nl"] Within that horn-loaded range, the 210/515 type combo does reasonably well, and produces rather more inspirational midbass than most direct-radiator type strategies. There is a reason why these designs persisted for roughly forty ye...
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Hello Romy!Cessaro had severe resonance problems in their room, so I didn´t stay long here. What I noticed in the short time (maybe too short for a qualified judgement) was no stabiltiy broblems but less musical than the 300B last year. Hard to descr...
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Hi Saturntube, 40 Hz - 200Hz = wooo, woo, wo, - hm... Forgive me as I'm not talking about horns right now, but some sort of 4th order *acoustic* roll-off at 200Hz may apply with a horn as it would, e.g. with a second order cross-over in a box-spe...
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This is a good example of a CNC horn. This is the Carfrae I was talking about. MDF Upperbass horns are made in sort of the same way, but you do have to cut the angles on the Lathe. (or leave the steps like a The thing is it is not really tridimensi...
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We should define some borders here; LF, when you have an UBH, should be from around 100 hz down to 30 hz, where the last fundamental tone of an instrument is played. ULF should be under 25-20hz.I would say that a driver playing 25-30 hz should...
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..... he he :-)Seriously, I listened some months ago to the LL1 sig. /ML3/Alexandria combination. A perfect example for an expensive mismatch. These Wilson Speakers are a grave for those amps, midrange is ok, but no high frequency area and absolutely...
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It's interesting that the most variation is in the upper bass, lower midrange. By eyeball,the peaks look like 240 and 480 Hz. or about the 2nd and 3rd harmonic of 60 Hz., although there is only a slight peak at 60. Is that a fluke or related to some...
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Folks,Before we discuss "high distortion" amplifiers, lets us ask what kind of SPL Romy's system produces.I don't know, so let me make some eduacated, conservative guesses.Let us assume his midrange and treble Systems are both 100db/W/m and he listen...
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