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Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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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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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, even wood and they can ...
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Bravo for the progress,Romy quotes in blue :"...My concern is that with introduction of that super-lucrative and “palatable cleanness” the new MF channels lost some bubbleness on sound..."Upon reading this, I of course immediately want...
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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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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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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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[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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[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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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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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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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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[quote user="Kerry Brown"]Why preface my comments?[/quote] Because it helps to put your comment in objective perspective. It is internet and people express opinions without any tangible common denominators of reference points. I might make a comment ...
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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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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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[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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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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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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[quote user="tokyo john"] I just stumbled on this thread, and am thinking about being your first customer.I am planning to move to New York from Tokyo end of this year - not just escape the nuclear radiation but to let my kids experience a different ...
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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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[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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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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