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 Stones # RAAL_70-20 XR
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PDF Brochure
(1000 KB)
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World’s smallest form factor for a true
ribbon of just 1.8 kHz cutoff frequency, reliable, able to
handle a lot of power, sounding like it doesn’t exist... All
that by using only one series capacitor as a complete L-R 4th
order crossover at 1.8k, combining acoustical and electrical
slopes, with minimum of added passive crossover components.
Featuring ( three ) transformer taps for resistor less sensitivity
adjustment, ribbon replacement kits, custom front plates, copper
soldering posts...
All of it, makes it perfect for reaching new limits in high-end
home stereo or multichannel and near-to-mid field studio
monitoring applications.
It was developed according to the wishes of the most demanding
manufacturers, that were looking for a quantum leap in true
ribbon design.
The exact process of making it, will remain a well kept secret.
Being different than anything else, including other RAAL models,
140-15D
and
70-10, it
is available only to manufacturers, only under previously signed
Non Disclosure Agreement.
For further info on 70-20XR, please, send e-mail inquiry to
info@raalribbon.com
stating your company data and your position in the company. If
you wish, you can include a brief description of your project.
You will receive a brief .PDF datasheet, with basic measurements
and data. If you find it fit for for your project, we will
proceed with signing Mutual NDA and after that you can receive
paid samples.
 ,
 and
 , are
registered trademarks of RAAL advanced loudspeakers d.o.o. |
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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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