ARTISAN™ RAAL Ribbon Tweeters Speakers and Kit's
RAAL 70-10D RAAL Ribbon Tweeter (with optional Amorphous Core)
True ribbon drivers are well known by their ability of exceptionally fine rendering of the details in music material. They work in a different way than conventional dome or ring HF driver, relieved of all the excess baggage, so to speak, and they do their job better than anything else, regardless of the price tag. No domes, rings, suspensions, coil formers, glues, damping material, not even the lacquer insulation on the wire of the coil. No heavy plastic carrier foils, like in cheap quasi-ribbons. Only 0.004 mm (0.00016 in.) thick aluminum foil, immersed in strong magnetic field. It serves as all the moving parts mention above.
Tremendous acceleration of air is available with RAAL 70-10, more than 13000 G, and in less than 200 microseconds after, that air is stopped. That brutal controlling force combined with the smoothest response available and bandwidth of 100 kHz, can ensure you that the weak link in any system equipped with it, will not be the HF driver.
It will show the differences between the electronics or cables without any effort by the listener. The better the electronics chain before it, the better the sound will be. The sound? Well, some people still can’t believe what they can hear with it, for the fist time ever, in their well known music material. That comes as standard with, pretty much, all true ribbons, but the effortless recreation of real dynamics, and amazingly high SPL levels for a ribbon of that size, was not known before RAAL 70-10. It doesn’t get intimidated by the big amplifiers. If you have clean power, feed it to the little fellow, and you will be stunned by all the music you have, presented in another dimension of reality. If you don’t have power, and/or you don’t like it, then discover the abundance of detail and true colour of any instrument played in a brand new, engaging manner. Yes, the best quality of HF region, and real, breathing, micro and macro dynamics gives a totally new sense of what the musician(s) wanted to say. It will make you forget that the system is in front of you. The music will come to life.
FEATURES:
- Special FLATFOIL® pure Aluminium ribbon - Special SYMMLEAD® low inductance signal path - Special EQUAFIELD® NdFeB magnetic structure - Special “non-wave-guide” INOX front plate - Super-fast settling time - Flat frequency response - Low nonlinear distortion - High signal power handling - Highest reliability
SPECIFICATIONS:
This tweeter comes in two models: standard and with Amorphous Core. Recently, we finished development of Amorphous C-cores transformer application in our ribbons. We are the first to use AMCC's in ribbons for absolutely uncompressed high power transient transfer and, at the same time, even further improving already the best low-level performance in the world today, by decreasing the width of hysteresis compared to HF ferrite cores. For direct coupled tube SE-ribbon, we successfully developed 175:1 ratio, -3dB at 120kHz Amorphous C-core transformers that can carry DC idle current of SET. Impedance conversion is about 30000:1, bringing the 0.1 Ohm ribbon up to 3kOhm, good for plate loading of most triodes in HF
Audio professionals about RAAL products and services:
(Provided by the courtesy of the signers)
Alexander, your 140-15D is an amazing tweeter. It is the purest sounding tweeter I have ever heard. You just hear the music. Thank you for building such a wonderful loudspeaker. I have been building custom hi fi and P.A. speakers for over 35 years and I would have to say your tweeter is the most drastic step forward in sound reproduction improvements I have experienced. I am now redesigning my speakers to include your tweeter.
Peter Dix Owner PDS Pro Audio Abbotsford, B.C., Canada
I have never experienced a tweeter with so consistent and smooth frequency response measured at 0.28, 1.2 and 2.2 meters. The next best measurement is Waterfall - the shortest decay time ever measured. Thank you, Aleks, for completely engineered product and excellent workmanship.
Wally Malewicz Owner WAM Engineering FlexSpeakers Hamel, MN, USA
Dear Aleksander, after years of designing and installing monitors and other equipment in state-of-the-art recording studios, your 140-15D true ribbon transducers will change the way I design Speakers. I just installed a system with the 140-15's in passive 2.5 way mid field monitors using 2 x Volt BM220.08’s. All I can say is WOW! Up until now I have only been able to use TAD or Scan Speak tweeters in studio installs. These ribbons share the better qualities of the best dynamic/horn systems with out the power compression or throat resonance. These things have NO coloration and are the most transparent drivers I have ever heard, plus none of the sizzle/distortion that folded ribbons and planar-magnetics are plagued with. I must say, I can not believe the clean SPL these things put out. They easily keep up with the Volts being driven full power with a 500 watt amp! Truly amazing!
Norman Druce Owner Norman Druce Audio Owosso, MI, USA
Mr. Radisavljevic, just wanted to drop you a line to thank you for making a stellar product that seriously outperforms its dollar amount. I immediately noticed the stereo image improve. This is a stock comment for decent monitors as far as width is concerned, and I have had this experience before, but your ribbons improved the DEPTH of my stereo image! No small feat. I could hear things that I struggled to place or even hear in a dense mix in the past. They also revealed some problems as far as EQ and placement in my mixes. This is not a phenomenon I am unfamiliar with happening, but usually, weeks or months after I am finished with a record, listening on a friend’s stereo with the distance and perception time and venue provides. You make a product that not only sounds great but bends the space-time continuum! All this and I can listen to them all day with less ear fatigue. Should you find yourself in Detroit in the future, I owe you a beer.
Chris Koltay Owner High Bias Recordings LLC Detroit. MI, USA
Hallo Aleksandar, we would like to thank you for making those excellent ribbon tweeters which help to take loudspeaker development to a new level. We have to confirm that your creativeness in looking for improvements in ribbon design and your exceptional attention to detail as well in design as in manufacture do not only result in excellent measurement performance but also in an amazing sound quality.
Rainer Weber & Klaus Rottenwöhrer RWA Akustik Systeme Akustikbau Kaiser Untergriesbach, Germany
Being a long time user of RAAL ribbons, I have always had considerable problems which are probably going to keep coming up in the future. It has been very difficult to find an adequate partner for them, be it mid-bass or mid units. More or less, only custom built loudspeakers can match these extremely demanding ribbons. With every new project, I face the same time consuming struggle. It often happens that, while listening to other systems without RAAL ribbons, I have to ask: “Excuse me, but are your tweeters working properly?” These ribbons are not capable of hiding or diminishing anything at all. You are able to hear the details from the recording that recording engineers certainly don’t want you to hear. Way to go, Alex! Keep revealing the truth to us in the future!
Nenad Napijalo Founder, President N.N. Acoustics Engineering Belgrade, Serbia
Dear Mr. Radisavljevic, I would like to thank you for your outstanding service and exceptional ribbon drivers. After six years, developing our line of Studio Monitors, it is your expertise that allowed us to finally achieve our goals. Thank you for working so hard and for making such a difference. I look forward to many future projects.
Danny McKinney President Requisite Audio Engineering, The Standel Amplifier Co. Los Angeles, CA, USA
We have chosen to include the RAAL ribbon tweeters in our products , due to their excellent performances . Alexander Radisavljevic is the new "wonder boy" among ribbon tweeter designers and is to be compared to the other biggest "stars" like Dick Sequerra and Alain Benard , no if's , no but's.
Guglielmo Burger Finaudio / Aliante / PataAcustica / CC... / Caterham Acoustics Revello, Italia
Having had the opportunity to test many ribbons over the years I find the line RAAL ribbons to be the best by far. The high level of engineering that has gone into these units is immediately heard. The detail and accuracy is truly amazing.
Todd Michael Head Speaker Designer Yorkville Sound Toronto, Canada
Hello Aleksandar, I have gone through about $13000.00 worth of tweeters of all types in my quest over the last 3-1/2 years. I have never liked any ribbon that I have tried before. I have found them to be dynamically constrained despite what the magazine and the do-it-yourselfers post. I have also found them to be overly bright and body-less. Well I can say that I am going to be using your 140-15D ribbon in my reference speaker design, your creation is simply fantastic and probably the best tweeter I have yet to hear. One of the major things I hated about ribbons was their delicacy, your ribbon does away with that issue. Congratulations on doing what seemingly no other manufacturer of ribbon tweeters has been able to do.
Donald Nance Jr. Tangent Audio LLC Atlanta, GA, USA
Dear Aleksandar, thank you for the excellent quality tweeter, thank you for the years and years of experience needed to produce such really great quality.
Majid Jafari R&D Manager JTS Pro Audio Group Tehran, Iran