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Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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In order for something to die, it must be alive! In the case of the spiral of death, those companies were dead at birth and only modern technology feigned life. There is no spiral - only a comedy of errors!What I am missing most of the time is a real...
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This is kind of shit that I hate. I went to AA and read a person said:
“Don't miss the CAR room... That would be Classic Audio Reproduction. But that's only if they are showing the same basic design as last year, which uses modified JBL drive...
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Hey Rom etal.I'm entering into unknown and difficult to intuit territory for me.I aquired a pair of very large constant dirrectivity horns EV hr9040 a, a little while ago and i now have a pair of jbl 2420's to power em. I haven't put them to gether, ...
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[quote user="be"]"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 b...
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JBL 2441 also seems interesting candidate, perhaps "smoother" than 2440:Duke LeJeune of Audiokinesis recommends them as a "poor man`s TAD"Beyma CP755ND/AL 1.4"http://profesional.beyma.com/ENGLISH/pdf/descarga.php?pdf=CP755NdAL.pdfSome interesting alu...
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I do not think that you really can trust an answer from someone willing to tell you what to do. Sure, the Klughorn is a great thing, but I have never heard it suitable integrated - which says NOTHING about the horn and driver but a lot about those us...
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I purchased a pair of front loaded horns with JBL e120 12" drivers. They are crossed over at 200 and 800Hz 24/octave2 pictures here:http://picasaweb.google.com/noviygera/Midbass#dimensions are of the cabs are 28" wide-20" high and 24" deep.When I ho...
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You go a head and stroke your minion Romy. But the few that have some brains will see threw your bullshit. You rap your horn skin in fiberglass with some 1/2 strips and if you get it to resonate at any frequency between 40 and 180 cycles, I will pay ...
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Romy, may be the alnico jbl 2482 + aluminium diaphragm (plastic surround) would suit for your application here. I tested such driver on 200 hz tractrix horn and worked fine. Went down well under 200 hz and is 2" throat. It is heavy but I would be usi...
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Yes but you are still going to need a higher order slope than 6db to prevent unnecessary non linear distortion from the bass driver and then the insertion losses inherent in a PLL crossover become an issue. Higher order slopes and active operation wo...
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I did not have a lot of time to ply with my new DEQ options. From what I have seen it turned out to much worst then I remember it. This think make soul-dead sound and I do not think that it shell be used for any purpose. I still have some thoug...
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Here is the set up working on trying to lower mechanical excursion w/o using large horns:5 way system. Crossover points are 40, 100, 750, 7500 the vertical JBL array 1400 mid horns have a horn tweeter built into their top. Yes the 15-40 Hz channel a...
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I've been having love/hate relationship with Lowther (and its siblings) for several years now. As you all say, it has many problems to use as a full-ranger. Right now, my set up is a 3way multi-amp, Lowther (Reps 1) in Medallion cabi...
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Romy, Some very good points here... if I downloaded the correct schematic from your site for the 6-channel Melq amp (also has the term DSET in the title) then you have created a 6-channel SET amp with built-in crossover points. Your first ...
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Romy,,I agree with most of what you say....But good audio engineering comes in small tiny increments,,when JBL introdiced the coherent phase plug..I said so what?? then the moved the position of the magnet,,I said so what??But they were getting ready...
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[quote user="Johan Dreyer"] I had a SG370 mid apart only yesterday.I should have taken a photograph. I have also seen the inside of the tweeter. They are very similar, so I have no reason to suppose the low mid SG 505 will be much different. I'll try...
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Me again..In my search for another jbl 2482 I chanced upon a Yamaha JA6601 Driver. http://picasaweb.google.com/jbjbjbjbjb/YamahaJA6601It looks very similar to the one that produces these amazing response plots on the Azura 204 horn.http://www.azuraho...
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-Background- Enspired by Jeffery Jacksons system as displayed @ VSAC, I'm building a five-way horn system. Tapped horn for up to ~80Hz; w/ Eminence driver 65Hz Tractrix from ~80Hz to ~400Hz w/ fane 8"; 250Hz LeCleach from ~400Hz to ~2...
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I went to eBay and searched for his diaphragms. If you look for the rest of the items he sells then you see that he sell vintage labels of Altec, Western Eclectic, JBL, Rogers, Studer… Well, in my books the people who sell it and those who buy it hav...
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Hi Romy,
Well firstly on those, the tweeter is not offset to one side - it appears to be time aligned directly behind the midrange horn and upper bass unit. Secondly, that's a JBL 2405....
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yes romy but my english is badThe JBL 2420 alnico sweet sound with my trumpet tactrix not felt the need for a tweeter, but the high was a bit behind. with the field coil at 100 volts sounds almost equal all'alnico but increasing to 130 volts, so that...
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Hi.The top picture of a cut JBL unit shows it has a ring just below the magnetic gap connecting the central polepiece and the front plate.Although there still is a little ring shaped cavity with a triangular cross section, the large cavity is hereby ...
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Why dont you use your midrange horn with the JBL from 600hz to 4800hz? I think it would have a fairly flat and good response and tt wont be beaming. It works with the tractrix 1000, I have done it before. I then tried my Radian 475be with JMLC1400 fr...
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somehow i missed that moment in macondo development when you introduced S3 as a low mid driver so this came as a surprise to me - what i remember is that you didn't write so favourably of S3 back in 2004 due to its ceramic magnet. but it's good t...
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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="KLegind"]Hi, I have some experience with the 2482. Sure it can reach 300 Hz but only with EQ. [/quote]HelloMy experience is that JBL-2482 can be used without EQ.Example on my system where 2482 is used on a home made "Tractrix like" horn ...
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I'm going to try and build a Melquiades type amplifier (with some help from friends) following the advice given above to make it as simple as possible. I could spend more money for "different" transformer, but I will ask you for advice on...
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Thank you, Jorge, for comment. I'm definitely going for wood horns. For my ear it has no coloration in compare with other material. Only for experiments I'm using what is available ready.Regarding driver for 300Hz, which one will you suggest to try ?...
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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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Romy, thanks for your prompt response. I find your response a bit appalling since I seriously hope I can get away by achieving a similar sound by not paying the full price. What did click about the Olympian? Might be easier to do comparison. Say ...
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