Yamaha NS-777, NS-333, NS-C444, NS-555 User Manual

NS-777/NS-555/NS-333/NS-C444

NEW PRODUCT BULLETIN

Digital Home Theater EF-Series Speaker Systems

NS-777/NS-555/

NS-333/NS-C444

High performance speakers designed for home theater systems.

The EF (Elliptical Form) Series feature Waveguide horns, PMD (Polymer-injected Mica Diaphragm)

woofers and highest quality internal Monster Cable wiring for total enjoyment of digital movie sound and

music sources, plus elegant Yamaha traditional piano finish cabinets.

NS-777

3-Way Bass-Reflex
Tower Speaker System

NS-C444

2-Way Dual-Woofer
Acoustic Suspension
Center Channel Speaker
System

NS-555

3-Way Bass-Reflex
Tower Speaker System

NS-333

2-Way Acoustic
Suspension
Speaker System

EF Speakers Add Elegance as well as Rich, High Clarity

Sound to Any Home Theater System

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The Beautiful Form Encloses Superior Par ts and
Technology for Reproducing Pure Digital Sound.

䡲 High sensitivity and

wide dynamic range for
contemporary digital
sources

䡲 Waveguide horn allows

the sound field to be
shaped and controlled
for optimal spatial
expression in home
theater environments

䡲 PMD (Polymer-injected

Mica Diaphragm) cone
woofer combines high­performance materials
and design for extreme
accuracy

䡲 Highest quality inter nal

Monster Cable wiring

䡲 High frequency

response dome tweeter
delivers clear, natural
highs

Bi-wiring connectivity

䡲

(NS-777/NS-555)

䡲 Beautiful Y amaha piano

finish with elegant
elliptical form

EF Series Has Been
Upgraded for Higher
Performance!

The PMC (Polymer-injected Mica
Diaphragm) Series was a great
success, proving popular with
consumers and winning awards
for excellence around the world.
The new EF (Elliprical Form)
Series is designed to build on
that success, offering even
higher performance combined
with an elegant Yamaha
traditional piano finish cabinet.
The woofers, tweeters and
cabinets have been refined and
improved, and even the wiring
has been upgraded, with
Monster Cable being used to
connect woofer and crossover
network. The result is superb
audio quality with music sources
and the latest 6.1 and 5.1
channel movie soundtracks. It’s
the latest in home theater
speaker design, from the leader
in home theater: Yamaha.

Behind EF Series Superiority: the
Waveguide Horn

Conventional direct-radiating home
speakers have broad directional
characteristics that result in a
relatively high proportion of reflected
sound (you hear a lot of sound that
has bounced off walls). Movie
theaters, however, are designed to
have a highly absorptive acoustic
environment so multichannel
soundtracks provide a rich sense of
spatial expression. To achieve the
same effect in the home, therefore, it
is necessary to use speakers with a
direct/reflected sound ratio quite
different from ordinary audio
speakers. This is especially true in
multi-speaker home theaters, where
there would otherwise be lots of
reflections. Yamaha accomplished
this with the development of the
Waveguide Horn, creating the ideal
home theater speaker.

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50

40 20 10

40 20 10 0 0

30

30

NEW PRODUCT BULLETIN

Flat High-Frequency Directional
Characteristics of the Waveguide Horn

Front

Rear

Conventional Radiation
Waveguide Horn Radiation (NS-777)

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

(6 kHz)

Diaphragm Physical Characteristic

PMD (Polymer-injected Mica

Diaphram)
Polypropylene Sheet 0.9 1.5 0.06 1,300
Pulp 0.46 1.6 0.03 1,870

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.

requirements by
using a PMD
(Polymer-injected
Mica Diaphragm)
cone woofer. This
diaphragm is
composed of 30%
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

Density Young’s Ratio Absorbed Vibration Acoustic Velocity
(g/cm3) (x10 kg4/cm2) Ratio (tan δ) (m/sec)

1.15 8.0 0.05 2,620

it the ideal choice for these
speakers. It can reproduce
frequencies up to 35kHz and is
powerful. The diffuser over the

Polymer-Injected
Mica Microscope
Photo

tweeter helps improve frequency
response and directionality.

Bi-Wiring Connection Capability
(NS-777 and NS-555)

Bi-wiring means that instead of
connecting the speaker to the
amplifier or receiver with two cables
(plus and minus), you can use four
cables: two for the woofer(s) and two
for the tweeter. This decreases
modulation distortion for purer sound

quality.
extremely light, yet also tough and
durable, with excellent response
speed.

Beautiful Yamaha Piano Finish

with Elegant Elliptical Form

As one of the world’s leading piano

High Quality Monster Cable

Extremely high quality wiring, from
the well-known Monster Cable
Products, is used internally in each
speaker to connect the woofer and
crossover network.

manufacturers, Yamaha has a long

history of wood-working expertise.

The EF Series speaker cabinets

feature the same luxurious and

environmentally fliendly finish as our

fine grand

pianos.

High Frequency Response Dome
Tweeter

The proven capabilities and
durability of this dome tweeter made

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NS-777/NS-555/NS-333/NS-C444

NEW PRODUCT BULLETIN

Main Specifications NS-777 NS-555 NS-333 NS-C444

Type 3-way bass-reflex 3-way bass-reflex 2-way bass-reflex 2-way acoustic suspension
Woofers Dual 20cm (8”) PMD cone Dual 16cm (6-1/4”) PMD cone 13cm (5”) PMD cone Dual 13cm (5”) PMD cone
Mid-Range Driver 13cm (5”) cone 13cm (5”) cone

Tweeter 2.5cm (1”) Aluminum dome 2.5cm (1”) Aluminum dome 2.5cm (1”) Aluminum dome 2.5cm (1”) Aluminum dome

Magnetic Shielding Yes Yes Yes Yes
Highest Quality Internal Monster Cable Wiring Yes Yes Yes Yes
Bi-Wiring Connectivity Yes Yes
Banana-Plug Compatible Terminals Yes Yes Yes Yes
Frequency Response 30–35,000 Hz 35–35, 000 Hz 60–35,000 Hz 55–35,000 Hz
Sensitivity 89 dB/0.283 V/1 m 88 dB/0.283 V/1 m 87 dB/0.283 V/1 m 89 dB/0.283 V/1 m
Input Power (Maximum/Nominal) 250 W/100 W 250 W/100 W 150 W/60 W 250 W/100 W
Impedance 6 ohms 6 ohms 6 ohms 6 ohms
Dimensions (W x H x D) 276 x 1,100 x 390 mm 222 x 980 x 345 mm 200 x 320 x 213 mm 514 x 190 x 213 mm

Weight 24.4 kg; 53.8 lbs. 20 kg; 44.1 lbs. 5.5 kg; 12.1 lbs. 7.3 kg; 16.1 lbs.

For details please contact:

with Waveguide horn with Waveguide horn

with Waveguide horn with Waveguide horn with Waveguide horn with Waveguide horn

10-7/8” x 43-5/16” x 15-3/8” 7-1/16” x 13-1/8” x 7-1/4” 7-7/8” x 12-5/8” x8-3/8” 20-1/4” x 7-1/2” x 8-3/8”

• Dolby Digital and Double D are trademarks of Dolby Laboratories Corporation.

• DTS and DTS Digital Surround are trademarks of Digital Theater Systems, Inc.

• Screen images are simulated.

• Product designs and specifications are subject to change without notice.

Visit us at our website:
http://www.yamaha.co.jp/

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YAMAHA CORPORATION

P.O.Box1,Hamamatsu, Japan

P10001373-NS777/555/333/C444@408