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Ortofon OM 78 Phono Cartridge

The OM 78 is a is a magnetic cartridge (MM) with a 65µm spherical stylus that is perfect for playback of 78rpm records, which require a larger stylus profile for proper playback.

OM 78 Technical Data:

  • Output voltage at 1000 Hz, 5cm/sec.: 4 mV, Lateral (mono)
  • Channel balance at 1 kHz
  • Channel separation at 1 kHz
  • Channel separation at 15 kHz
  • Frequency range: 20-15.000 Hz
  • Frequency response
  • FIM distortion at recommended tracking force, DIN 45.542
  • Tracking ability at 315Hz at recommended tracking force: 70 µm
  • Compliance, dynamic, lateral: 15 µm/mN
  • Stylus type: Spherical
  • Stylus tip radius: R 65 µm
  • Equivalent stylus tip mass: 0,5 mg
  • Tracking force range: 1,8-2,5 g (18-25 mN)
  • Tracking force, recommended: 2,0 g (20 mN)
  • Tracking angle: 20°
  • Internal impedance, DC resistance: 750 Ohm
  • Internal inductance: 450 mH
  • Recommended load resistance: 47 kOhm
  • Recommended load capacitance: 200-600 pF
  • Cartridge colour, body/stylus: Black/Black
  • Cartridge weight: 5 g
  • Replacement stylus unit: Stylus 78

    Details on Ortofon Cartridge and Stylus Installation and Maintenance

    A Brief History of Ortofon

    Ortofon Stylus History Chart

    Ortofon OM Series Product Literature PDF

  • Ortofon OM Series Cartridge [large view]
    Ortofon OM 78 Phono Cartridge
     
    Price: $90.00
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    Ortofon OM Series Stylus [clik for mroe]
    Ortofon 78 Stylus
     
    Ortofon 78 Stylus
    Price: $56.00
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    Ortofon Moving Magnet Phono Cartridge Profile [large view]
    Ortofon Moving Magnet Phono Cartridge Profile
     
    Ortofon Frequently Asked Questions [click for more]
    Ortofon Frequently Asked Questions
     

    Frequently Asked Questions Complete Text
    Ortofon Phono Cartridge Profile -Founded 1918 by two Danish engineers [click for more]
    Ortofon Phono Cartridge Profile -Founded 1918 by two Danish Engineers