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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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SGSG-37FRP (designed for mid-high ranges in a smaller system). 56,000 yen Driver frequency band: 400Hz - 10kHz, " optimal crossover is 500Hz or more" 110dB, 18,500 gauss
SG-370
(designed for...
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From the perspective of pumping of atmospheric pressure the ALE bass drivers might be more capable transducers. It or might not be so as well. To get 40Hz at 110dB in 5” it would take some excursion. I am sorry but you can’t bend the law o...
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Without wishing to open a can of worms....Mine are the 1443 - same as the 1428B save for the field coil voltage. I've finally got round to ins talling some of Cogent's replacement diaphragms to restore them properly. I can't say enough good thing...
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Jeno wrote:"...It looks like the system John Sheerin developed..."Clearly that IS the system. To see it, once having clicked on the link Jeno providedhttp://www.jhsaudio.com/index.phpyou need to scroll all the way down to the box in the lower right c...
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[quote user="anthony"]Regarding the other questions you asked, I am basically duplicating Romy's system as my starting point with horns.[/quote]Yes, as you can see my approach is also very similar.Two major differences: TH and Fundamental frequency r...
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Having just returned from this show, I have a few comments on your comments... 1) Yes, it was the amp you posted the link to. 2) Yes, the tweeter and two MF channel drivers were GOTO 3) Your estimates on flare rates aren't too far off (don't kn...
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It is not a secret that my short interaction with Murat and
my observation the progress he has with his playback made me to feel that his
is an idiot. There is nothing new in it, most of accidental audio people are
idiots. Nevertheless, I think it...
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This subject of digital crossovers became quite popular during last few years and many audio-people give up and go for a simplicity and painlessness of digital crossovering. There is an army of people out there who would swear by a complete transpare...
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[quote user="Murataltuev"] 3. GOTO
SG-146LD in 46horn 50-400Hz
I've added 0,7m length to 2m horn, so now my
mid-bass horn has 4" throat and 1x1m mouth and 2.7m length. [/quote]
4" throat into 1x1m mouth…hmmm, you hardly
will be able t...
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[quote user="Murataltuev"] Romy, read
my first post here.I told from the beginning that I'm going to try all kind of
respected drivers to decide for myself what I like most.This is not about
system as a whole with crossovering and other things. It...
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[quote user="Jeffrey Jackson"]........he has listened to Goto's advice quite a bit.. they have very strong thoughts on how to do things... some you will find humorous, others you will agree with... they beleive that electronics don't really matter.. ...
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When many of your will experiment with building and listening your own horns and spend countless amount of time by sketching a configuration of your new horn assembly you then might come to an observation that Macondo Upperbass topology is very s...
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[quote user="jessie.dazzle"] Color or opacity of the material in itself means nothing; it could very well be white, pink or have leopard spots (I'm betting you'd like that!), all independent of its physical characteristics. [/quote] Of cause the colo...
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Thanks Romy,I particularly appreciate the advice on the Goto issue, although a sojourn in Japan would be delightful too, come to think of it; in my experience there's no better place for culinary and audio tourism combined. "Local" support in the cas...
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Paul, Thanks!Yes, I had got the Romy point. I am just too obstinate to get that thing done but indeed I am still considerate a standard system as start point too. My problem with that, buy a standard one before, were I always try to avoid to have to ...
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Ok; there's a mis-print somewhere, or a manufacturing change... The web site linked listed SG-370 as 23,000 gauss, and SG-370DX as 24,000 gauss. The goto brochure lists SG-370 as 24,000 gauss. And was discussed yesterday w/ someone, one doesn't re...
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Paul,
Ok, I would agree with this. The power handling is the factor that I forgot to mention. The Japanese home drivers are rated for a few watts vs. the pro driver are rated for hundreds watts. BTW, some of older pro drivers (like my Vitavox) wer...
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Romy!Put on an engineer hat!
Time-aligned is an impossible task from my point of view. How can one perfectly time align different drivers? Align to what precision? mm, inch, cm or ft? 5%, 10%, 30% time align? Align to the tip of the cone or...
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hi Dominic i made myself the same question regarding the high frequencies in the orphean horn. the reason is probably because this horn has no compression, and the horn length is not so deep, and the exit diameter is 2 inch, quit big. If you read my ...
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Hello,Can you give me some ideas for a good room? Also, audio related ideas are always welcome too.The initial plan is a room with 5m H x 10m W x 14m D (about 16,5ft H x 33ft W x 46ft D). Solid floor, probably porcelain tile (chess floor style), and ...
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[quote user="N-set"]HAHAHAHAHA!!!Torsion fields are worth, at least, a nobel. Are you aware of that?Please do nor make 100% IDIOTS of yourselves invoking Einstein-Cartan theoryin audio!!! HAHAHAHAHA IDIOTS!!! Better spot 1st, 2nd or 4327483256rd orde...
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It is very easy to figure out acoustically. Feed the drivers and their crossover with a reference tone of fixed amplitude and fixed frequency, roughly in the middle of crossover point. Disconnect one of the drivers and measure the acoustic pressure e...
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Hello friends,Romy wrote (in the context of the MingSu/Jackson/Goto upper-mid bass horn thread):"...Yep, I would hang the midbass above and as you said put an upperbass on a floor to anchor the center image. Something similar to what Jessie is doing....
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[quote user="xandcg"]Now I got why
exactly midbass horns are reported to be so complicated to be properly made. [/quote]
Well, I do not think you did as I promise your
that the complexity is much more then you know, or at least then wh...
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Hi Josh... of course... for evaluation and pleasure-reasons I had my own 24 bit/192 khz live recordings of Lou Harrison's music, performed by a percussion ensemble with harp and assorted cymbals and drums, any size and flute and female, soprano voice...
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I kind of got stuck in selecting an upper midrange driver, above 2kHz. If a driver is going to screech in your ears it is going to be in these frequencies. I was never really satisfied with the range of 1" compression drivers I tried. That is wha...
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[quote user="audiofilofine"]
Horn Savant wrote:Final exit ~ 1M x 2M crn loaded (yielding 1/4 given mouth cut-off frequency)With 416's bass can be devastatingly spectacular !The general public have no concept of the efficacy of large bass hornsthan...
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It is a shame that I keep finding threads about a 300Hz compression driver channel, that ends abruptly. I have been trying with a not-so-exact Goto S-150 replica (~1.7m deep, 75cm diameter mouth), and I know of another fellow in Sweden who tried the ...
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So, I guess you do not measure flux if are getting. You might measure sensitivity and we might presume what when perm magnets has the same sensitivity as electromagnets then the drivers have the same magnetic flux density. Let also presume that when ...
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