Audio Database


a price point -- unknown (? at the 1990 time)

The speaker system which introduced the bipolar technology in order to improve a directivity.

A directive large speaker unit is arranged to an order baffle, and it is driving by the corresponding phase.
By a rear surface release type die Poral monotonous speaker, since it generally became a plane wave of an order opposite phase and was strongly influenced by phase interference, realizing such large directional characteristics was not completed, but the diffusion property almost near a 360-degree undirectional has been acquired with this technology.

M-1 is 3 way 6 unit configuration.
In each band, the quick transient and the hyper-polic dome tweeter which maintains a low-distortion flat response are adopted as a high region over the directing span of 180 degrees. The high-speed response wide band mid range by the carbon addition polypropylene low-mass cone of a three-layer lamination is adopted as the mid range. The special treatment was given to low-pass and the high input-proof long stroke Woofer of carbon addition polypropylene, a nitril PVC edge, and an aluminum voice coil bobbin is adopted as it.

An enclosure makes full use of a CAD design and CAM processing technology, and is suppressing the size error to }100 microns.
Moreover, the high-density fiber board was used and the occurrence of a peculiar vibration and a stationary wave is eliminated by a special splicing structure and internal septum, and solid angle reinforcement.
All units avoid the influence of a diffracted wave, and are using it as the flush mantle sunk into the baffle side. Furthermore, a corner is considered as curved surface finish, and it is being fixed that there is no gap in the same planar as a baffle so that a grill cross may not become an out-of-order of a good diffusion pattern, either.
Kibe's surface finish serves as black gross finish.

The network part is developed by Computer modeling in order to secure the neutral response and tone balance over an omnidirection 360 degrees. Furthermore, a careful selection part is combined and it is tuned up by the careful listening comprehension test.
Moreover, the input terminal supports bi-wiring / by amplifier.

Unit Using

Rating of a mode
Form 3 ways, 6 speaker bipolar bass-reflex scheme, and a floor type
Using unit For low-pass: 20.3cm cone type x2
For mid ranges: 11.4cm cone type x2
For high regions: 1.9cm dome shape x2
Frequency characteristic On-axis: 25Hz-23kHz}2dB
Off-axis: 25Hz-20kHz}2dB
Practical use low-pass property 18.7Hz (-10dB anechoic chamber)
Impedance 6ohms (4-ohm minimum)
The maximum input Succession: 300W
Peek: 500W
Output sound pressure level 83dB/2.83V/m
Cross over frequency 100Hz, 300Hz, 2.3kHz
Dimensions Width 491x height 1523x depth of 242mm
Weight 84kg