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Paul S wrote:

OK, Romy, that EnABL stuff got my attention! I can't recall all of the bad ideas borne of good research, but this EnABL thing sounds a little fishy, and certainly it sounds too good to be true, as existing in a simple and really useful form.  Can it be just so? Of course we've known for some time that we could alter the sound of various drivers by "doping" them, putting light foam stuff on them, etc., basically by messing with their mass, but also altering their skin effects and radiating patterns with this and that. But how can this EnABL thing/stuff work on anything that's supposed to go high?  I mean, how, for example, would it work on a ribbon or a 'stat panel, which driving surfaces certainly exhibit boundry effects, too?  Surely the theoretical benefits have to be offset by the mere presence of something more on the radiating surface? Obviously, I don't get it. BTW, I am surprised that TAD, which siupposedly caters to "pros", would give bad info on efficiency, but I will be more surprised if you get a stock unit to work for the top of the top end on your otherwise "perfect" hi-fi speakers.  Few "pro" speakers are drop-ins for hi-fi, in my experience.  I understand that TAD drivers are used in an expensive version of a JBL Hartsfield redux, but then, I remember the Hartsfield as fairly colored to begin with.

Yes, I also was VERY surprised that TAD had way off the mark sensitivity. From a different perspective PT-R9 is not really a really a professional driver but rather a Japanese toy for the freaks (perhaps like me). They made it as a kinky marketing statement and I did not see they sold them a lot. I think for the first 5 years they had some kind of reticular price of $2800 per driver. I think Michelle Framer go 4 of those drives and he suggested that when he placed them under the legs of his TT’s stand then the “soundstage because wider”. I presume that the fact that the quoted sensitively is way off (8db!!!!) then it might be an evidence that the driver never was seriously used. It is no surprise the Pioneer drove the form for the driver down very aggressively since then…. Still, despite my bitching about the PT-R9 I have to admit that it sounds very good.

BTW, I am very seriously contemplating of getting that Arum Cantus G1 of yours, despite of my prejudices. Is your G2Si driver have the quoted sensitively? Do you know if the Arum Cantus use the neodymium manger of the ceramic one?

About the EnABL patterns, I relay do not know. Do you remember when Einstein hammered a hors shoe atop of his door and reporters attacked him blaming him that how such a materialistic and rational person as Einstein was could believe in a such bogusness. Einstein replied that he hors shoe bring luck to everyone, even to the people who do not believe in it. I think I feel that same with the EnABL patterns. I do not really understand it and do not look forward to understand it….. However the EnABL treated Linaeums sound “different” (be advised the I did not hear the untreated Linaeums).

The EnABL thing sounds a little fishy? A vacuum tube or a transistor idea is also sound fishy to me, so many other things and particularly in audio. I do not know yet if the EnABL works. The result with Linaeums was very pleasant and I am sure that if I get your Arum Cantus then I will try to EnABLed one of the driver and to see how it behaves. I think that the baffled ribbon tweeter should be the most benefited by the EnABL methods.

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