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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.
For
measurements, drawings, crossover and more,
please download the PDF datasheet.
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:
- Ribbon
material: aluminium
- Ribbon dimensions: ( 70 x 9.5 x 0.004 ) mm
- Ribbon mass: 0.0075 g
- Ribbon area: 6.65 cm sq.
- Gap induction ( mean value over gap width): 0.62 T
- Frequency response: 2 kHz ~ 100 kHz
- Sensitivity: 92 dB / 1 m / 2.83 V
- Impedance: 8 Ohm
- Program power handling: 150 W*
- *Recommended crossover: 4th order L-R @ 2800 Hz
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
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