|500,000yen(one set, the 1990 release)
The speaker system of the vertical twin scheme which
adopted all the crystalline material diamond diaphragms.
The 20cm cone
type Woofer by the ALCC (alginic-acid composite cone) diaphragm developed newly
over four years of time is adopted as low-pass.
This diaphragm is what mixed the alginate fiber which made filar the alginic acid extracted from seaweed, and fibrosed for the compound oscillating version as for which an aramid fiber is mixed and made to pulp,When an alginate fiber achieves the duty of the binder of pulp and an aramid fiber exactly, the increase of both bonding strength and rigidity are improved.
Moreover, the high linearity magnetic circuit which
expanded plate thickness by 2.5 times over the past is adopted as a magnetic
circuit. The voice coil has realized short voice coil-ization completely settled
in a magnetic gap, and the fall of flux density is suppressed also at the time
of the large swing of a voice coil. Moreover, high flux density was obtained and
the AlNiCo-Magnet with little higher-harmonic distortion is adopted.
Furthermore, adopting zinc die-casting which has 2.6 times as much specific
gravity as aluminum in a frame, and reducing the unnecessary oscillation by
high-rigidity-izing, the work is carried out to form so that the air resistance
to a diaphragm may become small.
A reflection of the sound from a cone or an
edge can be suppressed by performing a hair transplantation manipulation to the
gasket top layer of a Woofer. Furthermore, little play sound of muddiness of
sound has been obtained according to the vibration suppression effect of the
The 3cm dome shape tweeter by all the crystalline
material diamond diaphragms is adopted as a high region.
This diaphragm is
not the coated diamond, is made from the polycrystalline of a diamond on the top
layer of materials, such as titanium which existed conventionally, 100%, and has
employed the original property of a diamond near the ideal of a diaphragm in it
Thereby, also in about 3.3 times of titanium, and a play
frequency band, a velocity of sound realizes about 3.4 times of titanium, and
the internal loss has also realized about three to 5 times of titanium.
Furthermore, the new W.F. (wave front) director who made full use of a
wave-front control technology is employed as the front of a tweeter. In
order for the director's material to serve as acer-mono laminating shaving
appearance excellent in the acoustic feature by the high rigidity and to
unite an energy response with a Woofer,While adjusting a diaphragm installment
location, in order to improve a spread of the intention nature of the up-and-down
orientation, oneself of a director's horn form is carried out.
Moreover, the AlNiCo-Magnet was adopted as the magnetic circuit
and zinc die-casting which has 2.6 times as much specific gravity as aluminum
also in the flange of a tweeter is adopted. Furthermore, the excessive vibration
is suppressed by performing a hair transplantation manipulation to the top layer
of zinc die-casting.
The unit routing serves as a vertical twin system
which made full use of a wave-front control technology, and the sound of all the
bands is emitted focusing on the tweeter. Moreover, the bass play which is
massive by considering it as the twin Woofer of a small caliber is realized.
A wave-front control technology is a technology of solving scientifically
how the wave front of the sound emitted from each unit spreading, and reaching
to a listener's ear,"The energy time response of a Woofer and a tweeter is
adjusted on a time base,"The control is strictly carried out covering four
points of "electric phases, such as a network, are made "the directivity of a
Woofer and a tweeter is controlled by a perimeter wave number band", and to
agree", and "controlling the wave-front diffraction by baffle form."
order not to tell the unnecessary oscillation from each unit to a baffle, the
full mid ship mounting scheme is adopted.
The Woofer is fixing the tweeter
to the inner baffle in an enclosure from the rear view of a baffle through a
hair transplantation layer, and is reducing the unnecessary oscillation of a
baffle by mounting a unit on places other than a baffle top layer.
Furthermore, the floating top who suppresses an unnecessary oscillation of a
top plate, and the shielding frame which intercepts the oscillation from a frame
are adopted,Network mounting also separated each unit circuitry, especially
covered the tweeter circuitry with felt from the bottom, and has eliminated the
unnecessary oscillation from an enclosure.
A Woofer circuitry and a
tweeter circuitry are made to gain separate independence, a calking
sticking-by-pressure product line is performed, and the transmit loss of a
signal is reduced.
The measures against vibration proof also with careful
mounting of each element were taken, and it has considered and arranged so that
it may not be influenced by a crosstalk.
Moreover, the input to a network
has adopted the radial power-feeding scheme so that signal transmission can be
carried out direct and uniformly.
The enclosure has stuck the Veneer Sheet of high-class walnut real material, and has employed the grain of natural precious wood efficiently. Furthermore, compared with the usual oil finish, the numbers of times of polish is increased and it has become the finish which improved smooth nature.
Moreover, the sound-absorption effect is high, and uses the wool
yarn which was excellent in tone quality for acoustic material, and the
unnecessary stationary wave in an enclosure is reduced.
contact button which can carry out the separation power feeding of the circuitry
the object for basses and for loud sounds is adopted.
||2 ways and 3 speaker bass-reflex scheme
- A Tallboy type and a magnetic-shield design
||For low-pass: 20cm cone type x2
regions: 3cm dome shape +W.F. director
|Play frequency band
||28Hz - 20000Hz
|Output sound pressure level
|The maximum input (EIAJ)
|Cross over frequency
||Width 298x height 1080x depth of 425mm