|INFINITY Kappa 7.1i
|150,000yen(one-set, around the 1993 time)
The speaker system which combined the latest
engineering acoustics with the enclosure of column form, improved the physical
basic performance, and raised music play capability.
The 25cm corn type
Woofer by an IMG corn is carried in low-pass.
This IMG corn is a corn which
consisted of compound material of a graphite fiber and polypropylene, and is
fabricated under loud sound and high pressure (injection moulding: Injection
Molding). The graphite fiber is radiately arranged toward the perimeter from the
center, and its unchanged operation domain of a corn is large, and it has
obtained the performance without the break rise of a corn.
Moreover, in order to raise special design-shaped a curvy linear corn (intensity
is added to the piston under movement) and intensity, the reversal dust
cap by which the establishment meter was carried out is adopted, and modification
of a corn is small suppressed also under the high power situation.
In Kappa7.1i, a light
weight and quantity rigidity-ization (it is light 10% and harder than before 5%)
are attained from the conventional IMG corn.
Furthermore, the phi133x19mm
magnet and the ribbon wire which demonstrates power on instant large current are
adopted as a magnetic circuit.
The 7.6cm poly dome shape unit which
adopted the diaphragm which inherited the technology of first Kappa series is
carried in the inside region.
This diaphragm is a thing of software polypropylene composition of the
newly developed super-thin film (0.3mm), and also diffuser of the aluminum
mesh is attached to the dome rear surface. Disorder of the frequency characteristic
by a rear surface wave is suppressed without applying addition to a diaphragm
by this diffuser, and the flat frequency characteristic and Low-noise-izing
Furthermore, the sonic
energy emitted to the dome rear surface was led to the back cavity from the
center of a magnetic circuit of special structure, and has eliminated the
influence by back sound pressure.
This poly dome is driving the diaphragm of
the shape of a low dome of Q from the dome perimeter by the large caliber edge
volume voice coil.
The plane drive type EMIT-R tweeter which adopted the
circular diaphragm is carried in the high region.
The plane diaphragm of an
EMIT-R tweeter is using the ultra-thin KAPTON film, carries out photograph
etching of the voice coil annular on the surface, constitutes a timbal, and is
driving the diaphragm directly combining a special-shaped magnetic circuit.
This has acquired a flat frequency characteristic and extensive directional
A network design performs a real-time fine tune in an
anechoic room, and finally it is the same room as actual family environment, and
it is a computer which uses a MLSSA FET program, and the domain of each speaker
unit of operation is determined, and also it opts [ it repeats many audition
experiments and ] for it.
Moreover, each parts, such as a capacitor,
resistance, a coil, are selected carefully by subjectivity audition experiment,
and are using the very-thick monster cable of the Infiniti special edition also
about internal wiring material.
By amplifier is supported and inside
loud sound is equipped with level adjustment.
IThe enclosure has adopted the column-like polygon cabinet in order to
suppress the influence of an internal stationary wave to a min. The baffle
material of 26.5mm thickness, native wood solid oak material, and a board
with an oak are stuck.
Moreover, the bass-reflex duct is prepared in the lower of an enclosure backplane, and it adjusts for tuning of a bass and the room using the spike which can be removed.
There was also a Black oak model
as an ordering model.
||3 ways, 3 speaker bass-reflex system, and a
||For low-pass: 25cm corn type
regions: 7.6cm dome shape
For high regions: Plane type
|Output sound pressure level
||Width 360x height 1075x depth of 263mm