NS-777/NS-555/NS-333/NS-C444
NEW PRODUCT BULLETIN
Flat
Front
40 | 30 | 20 | 10 | 0 | 0 | 10 | 20 | 30 | 40 | 50 |
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(6 kHz)
Diaphragm Physical Characteristic |
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| Density | Young’s Ratio | Absorbed Vibration | Acoustic Velocity | |
| (g/cm3) | (x10 kg4/cm2) | Ratio (tan δ) | (m/sec) | |
PMD | 1.15 | 8.0 | 0.05 | 2,620 | |
Diaphram) | |||||
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Polypropylene Sheet | 0.9 | 1.5 | 0.06 | 1,300 | |
Pulp | 0.46 | 1.6 | 0.03 | 1,870 | |
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PMD’s superior characteristics help ensure outstanding sound quality.
In order to effectively reproduce digital sound, speakers must have the following capabilities: wide dynamic range, high efficiency, sensitive response, and high linearity suspension. The PMD used in the EF Series Speakers plays an important role in providing these capabilities. Its strong points are listed in the chart. Density affects the speed of signal transmission and shows the speakers’ excellent linearity. Young’s Ratio represents strength, resulting in high efficiency and sensitive response. Absorbed Vibration Ratio is the value of internal loss; the lower this value, the lower the signal loss, so it also contributes to high efficiency and sensitive response. And finally, Acoustic Velocity represents the overall velocity of signal transmission, an important element in reproducing digital sound. With all these properties, PMD is a material perfectly suited to achieving the highest, most natural sound quality. The goal of digital sound composers is sound creation that permits the reproduction of realistic sound, including dialogue and sound effects, and PMD helps make this possible.
Rear
Conventional Radiation
Waveguide Horn Radiation
High frequency directional characteristics of an installed Waveguide Horn speaker (red lines) and ordinary (blue lines). The Waveguide Horn speaker shows excellent balance in the front direction, with the surround effect to the sides and rear is not adversely affected by reflected sounds.
Shaping and Controlling the
Sound Field
Waveguide Horns differ from conventional speaker horns in that their waveguide features a horizontal control angle of 135° and a vertical control angle of 120°. This allows the sound field to be shaped and controlled for optimal spatial expression in home theater environments. The Waveguide Horn also provides a much smoother frequency response than ordinary horns.
PMD Cone Woofer Makes These
Speakers Ideal for Home Theater
Sound
Home theater speakers must combine high power capabilities with excellent sensitivity and dynamic range, while being designed to prevent listening fatigue. The new EF Series speakers meet these
requirements by using a PMD
high quality white Indian Pearl Mica, chosen for the significant contribution it makes to sound quality. In order to maximize its distinctive qualities, absolutely no coloring is added to the material. We’ve also varied the cone thickness, making it thicker in the middle, which has been shown to improve performance. The cone is extremely light, yet also tough and durable, with excellent response speed.
High Quality Monster Cable
Extremely high quality wiring, from the
High Frequency Response Dome
Tweeter
The proven capabilities and
durability of this dome tweeter made
it the ideal choice for these speakers. It can reproduce frequencies up to 35kHz and is powerful. The diffuser over the tweeter helps improve frequency response and directionality.
Bi-Wiring Connection Capability
Beautiful Yamaha Piano Finish
with Elegant Elliptical Form
As one of the world’s leading piano manufacturers, Yamaha has a long history of
pianos.
3/4 (U)
