Ortofon 2M 78 (internal thread, mounting from above)

Technical specifications  

• Cartridge type: MM (moving magnet)
• Output voltage: 4,0mV*
• Amplifier connection: Phono MM
• Channel deviation at 1 kHz: ---
• Crosstalk attenuation at 1kHz: ---
• Crosstalk attenuation at 15kHz: ---
• Frequency range: 20-20.000Hz
• Frequency response: 20-18.000Hz +3/-1dB
• Scanning capability at 315Hz: 70µm**
• Needle compliance: 18µm/mN
• rec. tonearm type 2M, 2M Verso: light and medium weight
• rec. Tonearm type 2M PnP: light
• Scanning diamond: spherical
• Rounding: R 65µm
• Contact force range: 16-20mN (1.6-2.0g)
• rec. contact force: 18mN (1,8g)
• Scanning angle: 20 degrees
• Direct current resistance: 700 Ohm
• Inductance: 350mH
• rec. terminating resistor: 47kOhm
• rec. termination capacity: 150-300pF
• Housing material: Noryl/glass composite
• Weight 2M, 2M Verso: 7,2g
• Special feature: Mono generator, for shellac records (from approx. 1939)***
• Spare needle insert: Stylus 2M 78

*at 1000Hz, 5cm/sec   **at recommended contact force

Version 2M - mounting with screws from above.

***Stereo-Generator (two windings) which only reads side text. Identical signal on both pairs of connections.