Audio Database

The

Pioneer S-HE100
148,000yen(one set, the June, 1992 release)

Description
 
The speaker system which asked for the reality of the original sound, inherited the design concept of TAD (Technical Audio Devices) and Exclusive S5, and was developed by the concept in the high sensitivity and the high efficiency.

Two 25cm cone type Woofers which use an ALCC (alginic-acid composite cone) diaphragm are adopted as low-pass.
It is what mixed and carried out paper making of the alginate fiber, the alginate fiber extracted from seaweed, such as sea tangle, acts as a binder, and this ALCC diaphragm is improving bonding strength, in order to heighten the bonding strength of a high powerful poly ant rate fiber and pulp.
Moreover, the magnetic-shield type double magnet magnetic circuit which added the canceling magnet is adopted as a magnetic circuit, and the high flux density of 14,300 gauss is gained. Since T type pole is furthermore adopted and uniform flux density is always obtained in order, the linearity of the swing to an input is improving.
Furthermore, in order to improve the responsibility at the time of a small input and the Dainyuu power, the butterfly type damper which looked over form again is adopted.

The horn type tweeter is adopted as a high region.
The compression driver of the rear type with which high resolution and the outstanding linearity are obtained is carried in honed Leiber.
By the fading plug designed from research of hydrodynamics, the sound which this compression driver is a thing of the same scheme as TAD and Exclusive S5, and was emitted from the diaphragm is led to a core, turns into compressed sound, and is emitted from a horn. Since it is the rear type which made especially the pronunciation orientation of the diaphragm the orientation of rear, the length of the path of the sound of a fading plug becomes respectively the same, there is no disorder of the phase of the sound from each slit, and the high region property is excellent.
In the diaphragm of this driver, 3cm titanium nitride is adopted, it equips with the back cover excellent in the vibration proof made from aluminum die-casting behind a diaphragm, and the occurrence of the unnecessary oscillation is suppressed.
The large-sized oval wave horn is adopted as a horn part. This horn is designing the form of the flare send out a spherical wave, and, thereby, has realized a spread of a natural sound near the simple sound source.
Furthermore, the reflection of sound is reduced by making a horn opening round. Moreover, since horn form is an oval type, its horizontal directivity is large and it can obtain a natural sound on a wide range listening point.
Molding accuracy has adopted as the material of this horn aluminum die-casting which was highly excellent in vibration suppression nature.
Moreover, AFAST (Acoustical Filter Assisted System Tuning) of the new technology introduced by TAD is introduced, and the resonator is formed in the horn upper portion. Thereby, the transition of the phase could be smoothed and a more firm image orientation and play sound have been obtained.

The network part selected only the element of the low distortion carefully, it was made to distribute for every unit further, and it arranges it, and, thereby, has prevented the time interference of units.
Furthermore, the floating of the network board is carried out from an enclosure, and it is intercepting the oscillation from each unit.

In order to prevent an unnecessary oscillation of a baffle having an ill effect on play sound, the tweeter Woofer is fixed with the original mid ship mounting scheme of Pioneer.
The unnecessary oscillation of a baffle is reduced by fixing a unit to the interior instead of a baffle.

The enclosure is installing two single word I/O ports in a front in order to pull out the bass-reflex effect which reinforces low-pass.
Compared with one single word I/O port of the same dimension, there is little leakage of the inside compass out of an enclosure, and it is reducing muddiness of the sound by the interference from a unit.
Moreover, since the opening uses the R-shaped special elastic body, there is little occurrence of wind end sound and an elastic wave is emitted smoothly.
Furthermore, in order to improve a low-pass property, it is considered as the mass enclosure of the internal volume 100L, and the diffraction phenomena of sound are prevented very much by making the baffle of thickness into a round baffle.
Moreover, the high-density particle board examined in sound is used for the quality of the material, and finish is Chinese quince tone finish of the reddish dark brown colour.

The coordination which carried the attenuator in which high region level adjustment is possible in the lower of the input terminal, and was united with the status of the room by two positions of Normal/Decrease is possible.

Driver Woofer
Horn

Rating of a mode
Scheme 2 ways and 3 speaker bass-reflex scheme
- A Tallboy type and a magnetic-shield design
Using unit For low-pass: 25cm cone type x2
For high regions: 3cm driver + horn
Impedance 6ohm
Play frequency band 28Hz - 30000Hz
Output sound pressure level 96dB/W/m
The maximum input 120W(EIAJ)
Cross over frequency 2000Hz
Dimensions Width 330x height 1090x depth of 433mm
Weight 42.0kg