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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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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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Of course, any speaker is a compromise rather than a "solution" for the complex problems of "phase", which can hardly be "solved" by fixing driver diaphragms in the same verticle plane, at least relative to the listener. Not to say that this is not w...
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I spoke to the owner of the company. The drivers are copies of Western Electric 555 (but the owner insists that they use genuine NOS WE diaphragms membranes) but they can be custom made to fit in with one's requirements. I didn't know such a thing wa...
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[quote user="audiofilofine"] Sorry but I prefer not to say the brand of the diaphragms .I used only moving parts and not the structure, the suspensions were treated with a silicone resin[/quote]Yes, it is good thing to treat suspensions not the c...
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[quote user="AJ"]Hello,This is my first post to this site, which I have been absorbing for over a year.A horn project that I have been considering would include either a 1 inch or 1.5 inch throat compression driver into a Tractrix profile horn of...
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jessie.dazzle wrote:
What diaphragms did you finally settle for use with your S2s... Plastic or metal suspension?
Reply from Romy :...
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Well, I do not measure the difference between S2 metal and white
plastic. I do not know what white plastic composition is, I think it is Polypropylene
reinforced by fiber but I might be mistaken. The metal suspension diaphragms are
not too much us...
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electronluv do's not have the ability to make beryllium diaphragms or
the legal stuff to even buy raw beryllium i bet with a little surfing
you may find the companys diaphragms i use .
Yes 3.25" is to help get beter HF extension but to also get a ...
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Well, I have to admit that I did not listen the whole sound of AC vs. DC filaments yet. I will bring home today my DC lab supply that I use for my electromagnet coil and will give the try. I still at this point am not concerned about the “whole ...
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.…as everything was discussed here before.[quote user="chaos"] …when i tried your recommendation with s2 and 3uF cap my "basshorn" refused to roll of;-) [/quote]
This is normal, I have written about it many times. Those large bass drivers have a lot...
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All that I will be saying are the subject of my own experience with horns and my personal observations. You shouldn’t agree and most likely you will not. That is fine with me. I have lot of reasons behind what I will be saying and opened for some cla...
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Hi Romy:as I don't consider the thread as emptied, yet, I'd wish to add some thoughts after more days of listening to my system.I re-read an half-page chapter in French from Jean Hiraga's "Les Hautparleur" essay, concerning time-alignement and p...
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Thanks, Scooter.I am glad to hear from someone so quickly.I've been an "audiophile" for only 10 years or so. With the Edgarhorns, I am currently using a Cyrus Brenneman integrated amp (KT100). I also have a Yamamoto custom 2A3 (single plates) w...
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[quote user="zanon"]Romy:IF a person does have personal objectives to shape sound, then what additional options do they get with a 3-way off the shelf B&W that they do not have with full range driver?[/quote] Zanon, I think this is a whole point ...
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Romy wrote:"...It would be interesting theoretically to try the new S2 drivers and to see if they any different than the vitage drivers with new Mike’s diaphragms. I say theoretically as I am not planning to do it. if the new production of S2 units ...
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I would like the people who read this site and those others whohave genuine interest in Vitavox understand that that subject of old Vitavox production is a bit tricky and I would not be surprised if the truth never be known. There is not such a thing...
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As late as the 1960s every self-respecting hi-fi nut had a "secret recipe" for "speaker dope". My own guru would not give me his exact recipe for speaker dope but insisted that developing the stuff was a rite of passage I had to go th...
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A lot of people ask me about those drivers and I’ll try to compile my vision about them. I did try most of the possible tweeters: dome tweeters with cloth cones, varies type of hard metal domes, compression drivers with aluminum, titanium, phenolic a...
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Hello Romy,Thanks for the great explanation, I'm a newcomer to horns, so please treat me gently ;-)Very interesting info, so in essence there are two limits, the real "hard" limit, where you risk damage to the driver, and the "sensible" limit, below ...
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Josh, I am not sure what you want to say. If you looking to name the reason why you like the sound of Gotos then you are guessing as much as anybody else. I can tell you even more. I very confident that the Goto folks themselves are guessing. I do no...
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Koh,if time alignment is critical (in my world it is), the sources of the sound (the driver diaphragms) need to be aligned. A very long exponential horn and a short tractrix are not „impossible“ to align, but what reflective surfaces ftom the exp. ho...
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Jorge, not to stoop to a shopping list, but I thought I also mentioned the 375 in the post where I introduced Rullit. Anyway, I meant to. Since there is no mention of the 375 there now, I will drop it again. This was the driver I lusted after in my...
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Romy, You make all very good points. I probably shouldn't call the front of the driver a phasing plug, because actually the long wavelengths really don't care much about the shape of the exit, they will just pass right through...
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Don't worry Romy, I know exactly what you mean. I tend to discount the opinion of anyone who raves about a system's ability to play back patricia barber. Speaking of which, if I were in her shoes, bunions and corns aside, I'd be mildly...
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[quote user="mats"]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 h...
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Hi there
I can see Romy's face when he's trying to figure out Martin's time alignment strategy;0) I have Martin's 204 Hz horn with Fostex 208 E Sig. These horns are to be big to properly integrate with anything. They are OK with Fostex Lowther drive...
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You were given damn good advice Bud. So much has disappeared into the Black since WW2...
Through symmetry I would guess your technique would be appropriate to microphone diaphragms too.
I have taken the liberty to send a copy of your paper to...
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I am currently planning high-WAF speakers for my sister which have to stand in the corners on the floor. Asking for small corner horns I was told the EV Baronet could be a solution. Simulating it with roughly estimated dimensions I found that the FR ...
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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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