Nagaoka MP-150 MM sound box
A moving permalloy sound box that offers an excellent price/quality ratio. Aluminum tapered needle shaft and elliptical grinding.
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:
- Needle shaft: Aluminum, tapered
- Needle grinding: Elliptical 0.4 x 0.7 mil
- Output voltage: 4.5mV (5cm/sec)
- Channel balance: better than 1.5dB
- Frequency response: 20-20000Hz
- Channel separation: 24dB
- Mass: 6.5g
- Needle weight: 1.5-2.0g
- Load: 47k
- Dynamic flexibility: 6.0 x 10-6 cm/dyne
- Static elasticity: 18 x 10-6 cm/dyne
