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RAAL_140-15D
" Original" |
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$1225.00
AUD
PAIR
Factory Matched pair
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RAAL_140-15D-AM
Amorphous core transformers |
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$1390.00
AUD
PAIR Factory Matched pair
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Russell Storey |
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Stones #
RAAL_140-15D
View
PDF Brochure
(1000 KB
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RAAL_140-15D Ribbon Tweeter
Size matters. With surface of 21 sq. cm (3.25 in. sq.),
super-light 22 mg flat foil, deflector pads, homogenous
magnetic field, it represents the finest in today’s mid-high
transducer design. Many other details in its construction
serve as tools to achieve the flattest possible frequency
response and fastest settling time.Its fast and accurate
.
The main difference is that, contrary to other ribbon
drivers, it recreates the spherical sound wave, although
it is a straight line source, so the high frequency
range is not emphasized and “beamed” to a vertically
very narrow space.
Bad directivity characteristics is very audible, like
constant presence of sound system in front of the
listener, as the brain registers the changes in sound
field with small head movements thus inducing the
listener to use effort to be very still while listening.
Also, too directive speakers, tend to provoke just a few
of listening room’s reflections, making the needed
diffuse sound field in room deprived of high frequency
components, which is another problem to our brain. Real
instruments don’t behave that way, so that should be
recreated as mush as possible. 140-15D does just that,
it makes almost semi-spherical sound wave, like life
around us does.
Its ability to produce very high SPL with no audible
distortion while keeping the minute music details
revealed without any effort, brings natural character of
the instrument played into the listening room, with such
a quality of sound that upgrades the perspective of a
listener to a participant in an event that happened
somewhere else in time and place.
It comes easily for the 140-15D to "fool" the human
brain in such a way that, all of a sudden, makes
everything sound right and just as it should. The brain
has no option but to interpret that there are real
living people playing real musical instruments, playing
in the very room in which, a millisecond ago, contained
nothing more than your stereo system. The sensation of
hearing "natural" sound is overwhelming. The exact size
of all the instruments and vocals, their perfect
position within the sound stage, and the clarity of air
between the instrument's positions are all instantly
recognizable…
Enough said. You must hear it to believe it.
Jiri'Hi FI
Member of Queensland Audio club and
excellent speaker builder with a passion for quality
speakers including his project using RAAL
140-15D ribbon tweeter and 6'' PHL Bass mid
drivers . See Jiri's project at
Raal JKN 01 Speakers Project
For measurements, drawings, crossover and more, please
download the PDF datasheet.
FEATURES:
- Special FLATFOIL® pure Aluminum
ribbon
- Special SYMMLEAD® low inductance
signal path
- Special EQUAFIELD® NdFeB
magnetic structure
- Special “non-wave-guide” INOX front plate
- Exceptional vertical dispersion
- Super-fast settling time
- Flat frequency response
- Low nonlinear distortion
- High signal power handling
- Highest reliability
SPECIFICATIONS:
- Ribbon material: aluminium
- Ribbon dimensions: ( 140 x 15 x 0.004 ) mm
- Ribbon mass: 0.022 g
- Ribbon area: 21 cm sq.
- Gap induction ( mean value over gap width): 0.51 T
- Frequency response: 500 Hz ~ 100 kHz
- Sensitivity: 95 dB / 1 m / 2.83 V
- Impedance: 8 Ohm
- Program power handling: 200 W*
- *Recommended crossover: 4th order L-R @ 1600 Hz
Audio
professionals about RAAL products and services:
(Provided by the
courtesy of the signers)
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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.
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Peter Dix
Owner
PDS Pro Audio
Abbotsford, B.C., Canada
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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. |
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Wally Malewicz
Owner
WAM Engineering
FlexSpeakers
Hamel, MN, USA |
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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! |
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Norman Druce
Owner
Norman Druce Audio
Owosso, MI, USA |
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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. |
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Chris Koltay
Owner
High Bias Recordings LLC
Detroit. MI, USA |
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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. |
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Rainer Weber & Klaus
Rottenwöhrer
RWA Akustik Systeme
Akustikbau Kaiser
Untergriesbach, Germany |
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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! |
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Nenad Napijalo
Founder, President
N.N. Acoustics Engineering
Belgrade, Serbia |
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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. |
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Danny McKinney
President
Requisite Audio Engineering,
The Standel Amplifier Co.
Los Angeles, CA, USA |
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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. |
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Guglielmo Burger
Finaudio /
Aliante
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PataAcustica / CC... /
Caterham Acoustics
Revello, Italia |
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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. |
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Todd Michael
Head Speaker Designer
Yorkville Sound
Toronto, Canada |
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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. |
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Donald Nance Jr.
Tangent Audio LLC
Atlanta, GA, USA |
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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. |
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Majid Jafari
R&D Manager
JTS Pro Audio Group
Tehran, Iran |
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