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Light, Stiff, White Spruce Diaphragms for
Midrange & Woofer Drivers
Yamaha's White Spruce Diaphragm (WSD) material
emerged from an intensive search for a light, tough
diaphragm material that would help us achieve the
three elements of ideal home theater sound.
The pulp material used for the WSD is
manufactured almost entirely from long fibers of
Canadian evergreen white spruce, the world's
lightest single-sheet diaphragm material. With a
Young’s coefficient* equal to that of metal, WSD
material offers both exceptional toughness and
lightness.
An exclusive Yamaha process
accounts for the distinctive white color of
WSD material. It was selected for use on
the HX Series to reflect the performance
heritage of the Yamaha NS-10M, a long-
selling model that has been popular as a
studio monitor for over 20 years.
* The ratio of stretching force per unit of
cross-sectional area to elongation per
unit of length.
Edge-Wound Rectangular Voice Coils
with Aluminum Diecast Frames
These two high-quality components are
now used in only a few luxury units. The
edge-wound rectangular voice coils have
a wire moment 20% higher than
conventional round voice coils, significantly
improving the efficiency with which they convert
magnetic flux to motion. In addition, aluminum
diecast frames with flexural strength three to five
times higher than that of normal metal plate or
plastic frames further enhance performance..
Advanced Suspension System and Spider
An advanced suspension system and spider are
used in the HX Series to guarantee dynamic linearity
and reduce unwanted vibration.
4/8
NS-8HX White Spruce Diaphragm (WSD) Woofer Construction
FACTS, FEATURES & BENEFITS
White Spruce Diaphragm (WSD) Cone
Surround (Rolled Edge)
Aluminum Diecast Frame
Spider (Advanced
Suspension System)
Top Plate
Main Magnet (Ferrite, 10,200 Gauss)
Shielding Magnet
Edge-Wound Rectangular Voice Coil
Shielding Yoke
Bottom Yoke
NS-8HX White Spruce Diaphragm (WSD) Midrange Driver Construction
White Spruce Diaphragm (WSD) Cone
Surround (Rolled Edge)
Aluminum Diecast
Frame
Dust Cap
Spider
Edge-Wound
Rectangular Voice Coil
Top Plate
Shielding Magnet
Main Magnet (Ferrite,
10,300 Gauss)
Shielding Yoke
Bottom Yoke