Nagaoka MP-200H sound box + sled
Nice MM sound box. A moving permalloy sound box that offers an excellent price/quality ratio. Boron needle shaft and elliptical grind.
Founded in 1940, Nagaoka, Japan, manufactures its sound boxes meticulously by itself from start to finish, also working as a subcontractor for many big brands. The company's job description includes fine machining of metals, magnetic materials, and gemstone materials.
The world-renowned Nagaoka sound boxes and Audio accessories represent the traditional high Japanese concept of quality.
Technical information:
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Needle shaft: Boron
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Needle grinding: Elliptical 0.4 x 0.7 mil
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Output voltage: 4 mV (5 cm/sec)
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Channel balance: better than 1.5 dB
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Frequency response: 20 - 23000 Hz
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Channel separation: 25 dB
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Mass: 6.5 g
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Needle weight: 1.5 - 2.0 g
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Load: 47k
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Dynamic flexibility: 7.2 x 10-6 cm/dyne
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Static elasticity: 20 x 10-6 cm/dyne
