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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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Well, it was not trick question; I thought initially that they were TADs. However, TAD uses Alnico7, Alnico 5 and Neodymium magnets not the cobalt magnet. The TADs drivers do not cost €4K but rather €1.5K. I never heard TAD use Samarium-Cobalt ...
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of MTM arrangement of two TAD 1201 in <100 Hz Horn ? I assume they would both work in the same frequency range . Also JBL LE8 is only 89 db driver and it doesn't look like it can take any power . Difference in efficiency within the channels would ...
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49Hz To 52Hz will be your peak, so the best you could hope for would be 3 hz below that flat with a perfect tuning of your length of your horn and back chamber of your box housing your woofers. If you shoot for the free air low res of your design, of...
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Hi Dominic,
I have some Rola's. Although intended (in organs etc) for quite widerange use I'm not sure that for listening to music they should be allowed to go too high. The other thing I found was that what lower frequencies they produced were more...
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Well I was thinking how I can verify that my midbass drivers had sunk magnets. I can take one of the drivers off; take them apart and compare them with another of my Vitavox 15 inchers. I can measure the magnetic force in the gap and it will be objec...
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[quote user="Markus"]I usually manage to read you quite well, but this
Romy the Cat wrote:
direct or indirect phase constructors.
has me baffled. What do you mean, please?[/quote] When I wrote it I meant different ...
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[quote user="Romy the Cat"] For above 550hz you might use the same LL1627A if you wish, for MF the 200-250mA gap will be fine. Yes it would be reasonable to desire less inductance in the transformer, mean less turns but honestly I personally did not ...
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Thanks, Romy, for your generous reply.
I won't try to address everything about everything, but let me bore
you with a mini-history of what is going on with my playback so you
will understand where I'm coming from and where I'm trying to ...
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All below is written by Thomas Dunker
Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...
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(Note: I've neither seen nor heard these speakers)
Cessaro ALPHA:
TAD TD-4001 2" driver on tractrix horn with 56cm bell (approximately 250Hz). TAD claims response from 600-20KHz. Given that the midbass is essentially a direct radiator (theref...
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hi Romy! Good thought with the current on the damping...
I had another thought. High excusion might create lots of distortion in a compression chamber. No surprise.
But in my oppinion the sizes are often not in proportion. Lets calculate......
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[quote user="jessie.dazzle"] Back when Fane were still in business, I ordered a pair in 16O (I don't know if there is a theoretical best choice between the two for horn loading... Any thoughts ? However, the 8O model will require a smaller coil in th...
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ML2 is also making me hear my modified AI M3A pre-amp, not to mention I guess I could now benefit from all shielded cables. All this stuff was fine with the Wright 2A3s. Speakers: I built a version of Dick Olsher's 3-way Diamond...
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[quote user="vinylithicum"]Here are some of my observations regarding the Wolf von Langa RCA 1428 replica. I long time wondered where mr. von Langa gets his phase correction elements and the diaphragm for his RCA 1428 replica. It's obvious that a nic...
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Let's just pretend for the moment that you haven't heard the particular TAD driver Kevin is using , and consider the possibility that for at least for some portion of its frequency range, it has a tone similar to the S2 - perhaps it uses an alnico ma...
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Well, I cannot say that i have much interest in the installations on his Facebook page and this should be a strong indicator of the type of audience being targeted by the driver manufacturer.Nonetheless, he has sent me some frequency responses, but n...
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[quote user="Romy the Cat"]
Haralanov,I spoke with a guy who consulted me during my Electo-Vitavox project. He helped me with selection of core material, deliberated the core and calculated the right coil to keep the core mass optimally magnetized....
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Paul,
Thanks for the compliments.
You are exactly correct with regard to how I use a plotted curve and a sheet metal template... The part I like least is cutting out the metal template... This is because I use fairly heavy metal. Which is neces...
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He might be a fraud or it might be that he did found some stock of “different” Vitavox or Mike’s diaphragm. I do not think that there were any standards and the make different production runs, and some of them might be better or worse than other....
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"Borrow somewhere Lamm ML2.0 to drive them (very critical)
and you with those old and crappy JBLs will get a quality of Sound
that will be more superior than anything else about which “The Absolute
Sound” has wrote for the last 10 years, par...
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I was under impression that neodymium is more resistant against temperature, mechanical shock and flux modulation, it turned out that I was wrong about temperature:
http://www.intemag.com/magnetic_properties.html
It turn out that ...
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[quote user="rowuk"]I have experimented
with SS/SET and now DSEP for ceramic magnet horn drivers. I will agree that
ceramic drivers with SETs that I have heard being suboptimal, but after a year
of DSEP, at least for my use case, I am quite conten...
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Zdravstvui Roman, hi Chris,
I know almost nothing about the relation between sonical effect and
physics, so I will only try to speak about the latter. Take it as you
wish, I can as well delete the post if it just increases the
entropy.
...
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The Western Electric L-9 in Munich was/is an infinite baffle design. The 754B woofers are in a sealed enclosure with a front horn. There is no possibility of cancellation between front wave and back wave of speaker, so I wouldn't call it an "open baf...
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[quote user="Saturntube"] The difference soundwise in this half range 180hz and up horn module between the Leak TL12.1 amps and the First watt F5 clone was big, mainly the tonal balance is very different with the midrange sounding thin. Highs w...
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I'm also of the opinion that the bass is one of the most critical and most challenging parts of playback. Not talking about quantity, but rather the quality of bass reproduction. My approach has been to split the bass in two parts - Low and...
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Miab, I have very limited knowledge in construction techniques, moist prevention and how all of it might affect a big horn. My very uneducated production suggests me that it is not truly a bid deal, but of cause if go this route then I certainly ...
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I got my pair of F120A by-the-book bookshelves a few weeks ago and yes, in the beginning they were very much "compressed" sounding. Things improved a bit over time, but the low treble (which gives instruments their "color") is still recessed. So I ...
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Roman.
This last "venture " of yours is most welcome .A lot of of the people I know and most of the listeners from audio shows are always surprised when small monitors produce big bass and try to
impress with big sound. I never liked this "pushe...
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