Ortofon 2M 78 Phono Cartridge

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Ortofon 2M 78 Phono Cartridge

by Ortofon Cartridges

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Product Code:
Ortofon 2M
2M 78
Ortofon Cartridges

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Spherical 65um Diamond, true mono, for 78s

The 2M 78 Series - the true MONO from Ortofon!

2M are designed for precise and accurate retrieval of the information in the record groove. Our philosophy is to play the record sound as accurate as possible, without coloring the sound. We have optimized the design for ease of mounting the cartridge, weight and size to fit the most common turntables at the market today.

The name 2M was selected among several ideas. We wanted a modern name that would be easy to pronounce and to remember, and therefore an alpha numerical name was chosen. 2M means MM, which is the abbreviation for moving magnet.

Of course the 2M isnít just another pretty face. It has been engineered to the highest standards and is congruent with the unrelenting commitment of Ortofon to provide the most precise and accurate reproduction possible without coloration.

The 2M series of cartridges feature Ortofonís trademark split pole pins, an invention that enables moving magnet cartridges to have a flat frequency response, as with a moving coil cartridge. Split pole pins were invented by Ortofon, and were originally presented in the 500 series and Super OM series.

The 2M 78 features a 65um diamond for playback of 78rpm records, and a true-mono engine.

- An improved engine, which provides a high level of sonic accuracy
- Spherical diamond that is perfect for playback of 78 rpm shellac records, which require a larger stylus profile
- 2M 78 uses a strapped output to deliver the same output signal from both sets of pole pins. This effectively eliminates the need for mono-specific equipment, making it possible to enjoy true mono reproduction on any stereo playback system.
Output voltage at 1000Hz, 5cm/sec. 4 mV
Frequency range at -3dB 20-22,000 Hz
Frequency response 20-20.000 Hz +3/-1 dB
Tracking ability at 315 Hz at recommended tracking force 70 μm
Compliance, dynamic lateral 18 Ķm/mN
Stylus type: Spherical
Stylus tip radius: R 65 Ķm
Tracking force range: 1.6-2.0 g (16-20 mN)
Tracking force recommended: 1.8 g (18 mN)
Tracking angle: 20į
Internal impedance, DC resistance: 700 ohm
Internal inductance: 350 mH
Recommended load resistance: 47 kOhm
Recommended load capacitance: 150-300 pF
Cartridge weight: 7.2 g
Replacement stylus unit: 2M 78
1 x Stylus brush
1 x Screwdriver
2 x Screw M2,5 x 5
2 x Screw M2,5 x 7

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