Audio Database


Pioneer S-55twinX
100,000yen( It is 1 set in two sets, 1990 release)

The small vertical twin speaker system which pursued a feeling of a scale of the sound field which rival a floor type speaker in the size made every shelf.

The vertical twin system which introduced the wave-front control technology is adopted,Four points, "controlling a wave-front diffraction by baffle form", are improved. [ "electric phases such as a network, are made "adjusting the energy time response of a Woofer and a tweeter on a time base", "controlling the directivity of a Woofer and a tweeter", and to agree" and ]

The oven cone which mixed and carried out paper making of the aramid fiber to pulp is adopted as low-pass, and low-pass resolution is raised by raising a velocity of sound and obtaining a moderate internal loss.
Moreover, the AlNiCo-Magnet was adopted as the magnetic circuit and low-distortion-ization is achieved by the synergistic effect with a copper short ring and an OFC voice coil.

The 2.5cm dome shape tweeter which employed the W.F. (wave front) director who took in the wave-front control technology is adopted as a high region.
W.F. An energy time with a Woofer is controlled on a time base by a director, and also horn form is performing the directive control.
Newly developed new ceramic carbon is used for a diaphragm, and it is a composite material of ceramic carbon and a ceramic graphite, and has realized the higher velocity of sound and the Takauchi part loss.
The AlNiCo-Magnet is adopted as a magnetic circuit.

Each unit has adopted full mid ship mounting which suppresses an unnecessary oscillation of a baffle, and also has shielded the baffle and the unit with the shielding frame.
Thereby, thorough investigation of no vibrating and the absent-resonance-izing is carried out over the systemwide.

To a baffle, it is as thick as 30mm, and the diffraction phenomena of sound are stopped by adopting an elliptic curve round baffle.
Moreover, since electrostatic hair transplantation to which a fine fiber is made to stick is given to the top layer with static electricity and also hair is transplanted to the baffle mounting hole, the unnecessary oscillation of a baffle and the unnecessary reflection are suppressed.
The enclosure serves as Chinese quince tone finish of the calm reddish dark brown colour.

The gilding terminal in which the bi-wiring interconnection which separates the circuitry the object for low-pass and for high regions, and can supply electric power is possible is adopted as a speaker terminal.
Moreover, the gilding short bar is attached.


Rating of a mode
Scheme 2 ways, 3 speaker bass-reflex scheme, a bookshelf type, and a magnetic-shield design
Using unit For low-pass: 14cm cone type x2
For high regions: 2.5cm dome shape +W.F. director
Impedance 6ohm
Play frequency band 45Hz - 40000Hz
Output sound pressure level 91dB/W/m
The maximum input 150W(EIAJ)
Cross over frequency 2600Hz
Dimensions Width 236x height 460x depth of 310mm
Weight 13.0kg