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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Jessie, yes from a perspective of general horn propaganda your post it correct but from the perspective of “reading the back side of the midbass speed bump” I would argue that it has nothing to do with horn loading. Look at the notion widely. I would...
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Good start Dan!The JBL phenolic 2" driver is 2482.I would lower the crossover point as far as you dare, 300Hz or so.Now the 2226 will do what they are pretty good at.Later you will likely want to filter the 2445 around 2k.A 600Hz horn with a 1" drive...
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[quote user="Romy the Cat"]I do not know the 2482 driver but all of the 2” exit drivers have in my estimation some unpleasant behavior as lover knee when you stress them to go very low.[/quote]Hi RomyJBL 2482 was mainly designed for very high power p...
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I believe you use the laser to find out at what frequencies there are resonances and where they are at so youcan make the phase plug accordingly but like I said I know about as much as those lasers as I saw in the Tad brochure. A machinist told me on...
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In my view the leather as a suspension material is absolutely spectacular and this is because it's mechanical impedance is very close to that of the cone (of course made of fine paper) and there is no energy reflected from the surround back to the vo...
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[quote user="nl"] However, these sorts of basshorns with twin 15" drivers and a very large mouth (larger than the cones of the drivers) have a long history. The Altec 210 cabinet, as used in the Altec A2 systems with two 515-type woofers, is a prime ...
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For the person who very easy toss comments like “utter nonsense”, BS and “does not make sense” you are very uninformed. If you stop position yourself as an ignorant teenager who “knows everything” then you have chance to learn something. The Car Talk...
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Decoud, in order to say anything useful I would like to know to the following: 1) Where the tweeter will be installed? 2) What the size of the room? 3) What are you planning to install the speaker in your room? 4) What LF solution do you consider...
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Years ago, when I visited the Cogent guys, Rich was working on one of their big drivers. The diaphragm was big and even thick and heavy, as compression driver diaphragms go. Of course they used 300B amps, and the bottom end had the "sewer pipe" type ...
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Of course i used the 515-G. this famous speaker suited very well to our bass horn...as any other bass horn ! the only problem with the 515-G was a upper end a bit...noisy with our 6db crossover.When we started with Cyrille-audio a project of a 15" fo...
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Well, I didn't come so close to answer your question right.I saw a few from the German DIY scenery and for them it was like the return of Jesus, best sound on PlanetBut probably they are still deaf as usual, because the Frequency step ups are limited...
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[quote user="RonyWeissman"] Got my new Le Cleach tractrix horns (320hz) for the Vitavox S2's. I'm x-ing over at 600hz with 2nd order 12db/Octave which I know is barbaric for you but it is all I have for the moment. [/quote]
Why is it necessary...
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Romy quotes in blue (pulled from the "Adding one more channel to the Macondos" thread) "1) Make sure that your cone is properly center in a gap. It is very important as misaligned cone will do compression at bottom end"
I feel confident that I am ab...
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[quote user="be"]The best driver I have heard is the TAD 4003.
It does not use the secondary resonance of the suspension, as described by Duke LeJeune above for the TAD 4001-4002, to extend the response towards 20 kHz, but has a natural roll off fro...
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Op, I clearly have no idea as I never have seen/heard about the 2440 with phenolic diaphragm. Who know perhaps they did it. The phenolic diaphragms were the invention in late 60-70s and a remedy against the nastiness of the first SS amplificatio...
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Allo Romy, I have no idea about the above - my gut feeling is that the required thickness of material would be too great, still, I bow to your experience in S2 mods. I just wanted to mention something that came to mind that might be of interest: I re...
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Hello Johan, Great pics, the diaphragm appears really thin, almost like gold leaf for guilding...I have a question about the screw mount that Goto uses. Did you by any chance find some kind of flange (for pipes) that would work as an adaptor? Pe...
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For all S2 fans... please be aware that seller "milesvintage2007" was claiming to have found a load of diaphragms in an old cinema (yeah, lots of those running Vitavox in Hong Kong, I'm sure...*)Even forged the labels on the tins... He has since remo...
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Hm…m… I do not know how about that.
Well, the SG146XX
where the most interesting from one perspective and the most problematic from
another perspective. Goto, never gave to SG146 an option to moderate resonance
frequency and without it I feel i...
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... my only experience with newer, expensive Berillium diaphragm Goto drivers, has been a mix between "Wow, I'm listening to a +35K euros speakers system" and... "Gosh, music do not sound this way"... this of course was due to some crossovers tuning ...
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[quote user="Romy the Cat"]I was very slightly open the back chamber of the driver that gave to me some ease at lower knee.[/quote]Congratulations you have found and use this principle, otherwise the back chamber acts like pneumatic brake for the low...
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No love lost for any particular driver type here. They are all all-but-hopeless, as far as I'm concerned, just for different reasons.Jesse, what I wonder is how the small daiphragm of the compression driver, with its very small movements, can b...
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[quote user="martinshorn"]The bass horn for the ak151 is housing a rear chamber slightly open, giving the injector channel - that creates a lot charme, flavor and „heart“ but also 3 dimensional projection. [/quote]I need to say that that very muc...
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Robin, I don't know why, but for no reason at all I was thinking the 1" polyester driver was a dome! Its being a compression driver likely means a 2" diaphragm, and it certainly opens the door for sub-2kHz performance. Actually, it's 8" drivers doing...
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MS2, I don't care much about compression drivers, but I have spent the past 2 1/2 years playing with direct drivers, trying to figure out what makes good sound. And no matter any notions about "scientific discoveries", the whole process has been the...
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Jessie, at the home page, in the left, within the GoodSoundClub Section there is the “Announcements” item of menu, which will bring you to the thread with the instruction how to upload the images to the site.
Regarding the issues that you are trying...
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Hi Romy, Splendid work - much appreciated research this!I know this is totally premature, but if you do find that you prefer the S2 as the flux is increased and hit a current limit for the coil, then you *might* get a flux benefit by using a lower ca...
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[quote user="cv"]Obviously it makes shipping and transportation a pain. Uncut implies sea transit which will take a few months. Martin mentioned that he almost didn't manage to get them out of his estate car, which would have resulted in the coolest ...
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[quote user="rdrysdale"]Romy, I just got a Vitavox S2 into my shop today. I notice that it has a very heavy stainless screen on the front, do you leave the screen on when using the drivers? It looks like it restricts about 50% or more of the thr...
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AlloWell this could be very interesting.... the Melq driver (at lower voltage) direct coupled to a 6C33 cathode follower run at low voltage, high current. Vincent looks like he's running about 80V 500mA, though in this case you'd need to use a r...
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