Audio Database INFINITY Kappa 7.1i 150,000yen(one-set, around the 1993 time) Description �@ 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 are attained. 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 characteristics. 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. Rating of a mode System 3 ways, 3 speaker bass-reflex system, and a floor type Use unit For low-pass: 25cm corn type For inside regions: 7.6cm dome shape For high regions: Plane type Frequency characteristic 39Hz-35kHz�}2dB Input impedance 6ohms Output sound pressure level 89dB/2.8Vrms Allowable input 225W Crossover frequency 500Hz, 4.5kHz Dimensions Width 360x height 1075x depth of 263mm Weight 24.7kg Attachment Spike