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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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[quote user="Romy the Cat"]audiofilofine, you need to examine your room and your entire domestic environment in order to see where and how you might make your pair of bass horns. Also, if they will be 20Hz horn then are you planning to use next chela...
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[quote user="jessie.dazzle"]I do not interpret Pham's page to show that he is running more than just one horn system; what I see is an evolution of a system. It looks like, in its latest iteration (under the heading "System Update 9/29/10"), Pham has...
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ah forgot. Have some measures to give you an idea. First, this is an (what i use as good budget replacement for the TAD2002 tweeter) a JBL LE85/ 2420 in that trumpet. Green is a „normal“ horn response for comparison. Red is the JBL 2312 trumpet: [url...
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[quote user="zako"]It is not unusual for famous people to use there name for ENDORSEMENT,,SPORTS MEN HAVE MADE MILLIONS that way.. AMPEX used Frank Senatra..JBL used Benny Goodman...Its easy mony standing next to a product for photo Op and getting p...
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There were plenty it of them made: Techniques 9500, Excusive 2301, Iwatas, JBL 2350 and JBL 2345, Vitavox (narrow) and few others … They kind of very strange horns and I always was suspicions about them. Though my suspicions are purely theoretical: a...
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The Loudspeaker (Troels Gravesen project); a report started "too soon" because they've taken sooo long to build, and they fired right up (first try), and they already do Music!
For some time (at least a decade) I thought about
building a ver...
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Somebody from AA was asking about electromagnet. The subject pup up here from time to time but this time Bruce Edgar uploaded an interesting comment. Bruce is not a typical AA Moron and if he says “inaccurate things” then it is not due to ignoran...
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I wish I could stop the US government from selling AK47s in any corner shop in the US. If you give a monkey a gun, most probably he will shoot himself. If you give a monkey an AK47, well that is different. He will take anything he wants and few thi...
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Yes, there is a Radian replacement diaphragm for original JBL phenol ones. It's a 4" voice coil, aluminium alloy dome with mylar suspension. Looks good on paper but I don't know if it is good. The retail is $210, usually goes on Ebay around $160.So y...
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RECARDO,,,,ITS OBVIOUS YOU DONT KNOW HOW TO READ...SOON ALL SCHOOLS WILL ALSO DROP CURSIVE WRITEING,,,HOW WILL THE KIDS PLACE THE SIGNATURE ON A DOCUMENT,,,PRINT IT? YOUR LUCKEY A DIDNT WRITE IN RUSSION,,,OFFENSIVE WOULD BE IF I TOLD YOU TO FECK OF...
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Hello Macman,Nice horns, I like that you finished everything properly! I am getting tired of seeing piles of horns.I think the ringing you are getting from your midbass horn is that the throat reactance is not balanced. How did you calculate the ba...
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I also am selling my JBL 2490 mid-range drivers and perhaps a collection of my original Aura 1808 drivers. The 2490 drivers are new and Auras are some old and some new. I just do not see myself to develop any inspiration to use them......
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Romy,Your Macondo system is something that has been a "role model" for what I'd like my playback system to be in the coming years. And much of what I've learned about horn playback systems I've learned from reading your writing and other posts on thi...
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Years ago, the two different systems in which I heard RCA 1428s - in a fairly big warehouse and crammed into a basement listening room - used giant RCA multi-cell horns in combination with giant Ubangi bass bins, passive crossovers and vintage WE or ...
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[quote user="Romy the Cat"]atilsley169, I would ditch your request to define term high-end. I think you might do it for yourself if the defining of the term is important to you. Your second question however is very interesting. You ask if the purchas...
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Probably the s4600 . They are replaced by the s4700, around 20k $ if those are the ones. There are very few models of the ultra high-end jbl here in france, but they are very well respected. I have never heard....
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Yes, Haralanov, thanks. I just goggled the JBL Array 1400 and they did look what I heard: http://www.jblsynthesis.com/downloads/products/prod_94_634484048356173879_Specification%20Sheet%20-%20Project%20Array%201400.pdfVery accurate and surprisingly 8...
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I did not like the two slit configuration of the phase plug..but the five to one compression ratio produced low distortion,,,but i was not impressed with its bandwidth,,,JBL also used a eight inch speaker assembled to a special phase plug,, You will...
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Interesting, according to the link the guy moved from 4 Goto drivers to Rulited Lowther and Foxtex. I wonder if he got sick to burn his Goto drivers. I also wonder what would happen if insted all of it he use the default JBL 2440. Surly, both Goto an...
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Before experimenting with the Hi power Electrostatic module, I used 416's in my large corner horn. They sounded extraordinary (ran with inf baffle to basementand made me realize how much Altec/JBL enclosures suck with their poor deep bassperformance...
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[quote user="Horn Savant"]Before experimenting with the Hi power Electrostatic module, I used 416's in my large corner horn. They sounded extraordinary (ran with inf baffle to basementand made me realize how much Altec/JBL enclosures suck with their ...
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Hi,Finally, I have time to build some horn speakers and learn what is it, bought JBL 2440 drivers and before my frame will by finish (next week) and horns will arrive I want to renovate those drivers. My question is:Can I take off that "grainy" topc...
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Romy, are you going to verify the decision of using fragile vintage drivers?E.g. by trying JBL midbass drivers?They would be closer to the design philosophy of the Fane Studio 8M.http://www.jblpro.com/components/maxout.htm#2020H...
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[quote user="Romy the Cat"]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. ...
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Post #73:
..
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by
be
on
2010-02-27
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Romy wrote:"However, the diaphragm in the small JBL 2420 driver is full metal (correct me if I am wrong) and there is absolutely nothing in that driver that might be soften mechanically."The speach coil former seems to be made of some kind of fiber a...
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are pair of jbl 2420work with 100-130 voltpower supply is with 5u4 tubei use with diy tactrix horn and jensen field coil woofers.crossover at 800 hz 6 db or when use 3 way multiamplification 800-8000 in this case tweeter is old jensen-magnavox.no sel...
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I think guessing what the hell they did with tweeters would make since if whatever they did sound right. Since Living Voice’s is not the company that has a lot of exposure in US I do not think I will ever hear those speakers. Even if they have US rep...
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[quote user="ayebee"]I’m probably suggesting the obvious, but have you tried adjusting the crossover component values on the fundamentals and MF-channels? On the fundamentals-channel, increasing the inductor-value, and decreasing the cap, so that...
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"This topology was invented by Steen Duelund"Ah-hm, ring radiators where not invented or even re-invented by the Steen Duelund dude, just copied. JBL used the priciple 40 years prior to that in: 2402-2403-2404-2405 and Fostex have been using them al...
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