CORAL H-100
¥ 29,000 (1 unit, around mid 1970 s?)
¥ 32,000 (1 unit, around 1980)
Commentary
Horn type tweeter.
15 micron ultra-thin super duralumin is used for the diaphragm, and by hardening with high-precision thermal furo, ideal and stable physical characteristics such as light weight and hardness are realized.
In order to make the most effective use of the magnetic flux in the air gap, the voice coil uses an aluminum ribbon wire wound in an edgewise manner. In addition, a high-conductivity aluminum alloy is used as the material to generate a large driving force and braking force, resulting in excellent transient characteristics and high conversion efficiency.
The horn equalizer has been machined based on precisely calculated values.
The clearance between the throat narrowed to the limit of machining and the diaphragm finely adjusted to near 0 provides sufficient air load to the vibration system, and excellent transient characteristics are obtained by complete resistance control.
The internal magnetic circuit uses a casting pure iron NKS-5DG and a high-permeability magnet for the pole piece and yoke plate, resulting in high magnetic flux density.
A special board is attached.
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Model Rating
| Method | Horn type tweeter |
| Playback frequency band | 7 kHz to 30 kHz |
| Impedance | 8 Ω |
| Maximum input (music) | 30W |
| Voice Coil Diameter | 18 φ mm |
| Magnetic flux density | 19,500gauss |
| Output sound pressure level | 110dB/W/m |
| Crossover frequency | 7 kHz or More (12dB/oct.) |
| External dimensions | Diameter 98x Depth 115 mm |
| Weight | 3.8kg |
| Attachment | Special platform |