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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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 niche-manufacturer such as W. ...
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I am not a huge fun of S3 for MF use as the ceramic magnet is less interesting then alnico magnet for HF applications. For the low mid, or as I call it the Fundamental Channels the HF problem that ceramic has do not manifest themselves. My Fundamenta...
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Gordan, I think you are missing the accent of what I meant to say. The Class A or not is not important for compression drivers and the S3 in particularly. I mean it is important and it much be ONLY class A but I do not see any SS amps switching in cl...
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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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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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[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="coops"]Romy Hi, I didn't particularly set out to 'demean' Avantgarde, they have a good business model, I don't believe it is a secret that they modify conventional drivers, I simply mean that the constituent parts of a Cessaro horn ...
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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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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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(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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[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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"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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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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[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="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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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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"Do not use plastic caps ... but go for a tandem of electrolytics Nichicons with active biasing."
Hi Romy,
Please excuse my ignorance. Can you please clarify what you mean by "active biasing" -- in relation to the caps?
I'm thinking to get...
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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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Lots of good, relevant information lately in the new "Basic Guide to Advanced Audio" thread! But I don't want to orphan this thread because it is specific to speakers, which at this point means, drivers.So, germane to drivers, where should one start...
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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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