YAMAHA NS-10M ¥ 25,000 (1 unit, around 1978)
Commentary
A speaker system developed with the aim of creating a high-performance compact
monitor speaker that is smaller than the size of a high-performance large speaker.
Nicknamed Big Ben, it has been used as a studio monitor all over the world and has sold
over 300,000 units.
The 18cm cone type Woofer is carried in the low-pass.
The white straight cone of a conical type is adopted as a diaphragm. The sheet
manufacturing method is adopted as the manufacture of this diaphragm, and the unevenness
of density and thickness is suppressed to a small extent. The edge is a high-compliance roll
edge that is flexible and does not change over time.
Moreover, high efficiency and high input resistance are aimed at by adopting a ferrite magnet
with a magnetic flux density of 10,800 Gauss, a voice coil with a heat-resistant copper ribbon
wire wound edgewise, and a lightweight voice coil bobbin for the magnetic circuit.
The 3.5cm soft dome type tweeter is carried in the high region.
The soft dome integrally molded with the tangential edge is adopted as a diaphragm.
Moreover, the high input resistance and high efficiency are aimed at by adopting the
ferrite magnet of 14,000 Gauss, the 27mmφ voice coil by the heat-resistant copper clad
aluminum wire, and the lightweight craft bobbin for the magnetic circuit.
The MP capacitor etc. are adopted as a network part, and the high-quality sound is aimed
at.
The closed system is adopted as an enclosure, and it has a six-sided integrated structure in
which particle boards with a thickness of 12 to 15 mm are joined with a special strong adhesive.
The movement of the cone paper is controlled by the air suspension by the closed system,
and the mechanical resistance of the edge is reduced. The filler selected by hearing is adopted inside.
The exterior has a black paint finish with real wood.
Model rating
method 2-way, 2-speaker, sealed system, bookshelf type
Unit used For low frequencies: 18 cm cone type For
high frequencies: 3.5 cm dome type
Playback frequency band 60Hz-20kHz
Crossover frequency 2kHz, 12dB / oct
Impedance 8Ω
Output sound pressure level 90dB / W / m
Rated input 25W
Maximum input 50W
External dimensions Width 215 x Height 382 x Depth 199 mm
weight 6kg
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