2M 78
A mono phono cartridge from the 2M Series, built for playing 78 rpm shellac records. It suits listeners who want to play mono 78s on a standard stereo system.
- Mono cartridge for 78 rpm shellac records
- Spherical stylus, 65 µm tip radius
- Strapped output works with any stereo system
- Output voltage 4 mV at 1 kHz, 5 cm/sec
- Recommended tracking force 1.8 g
- Half inch mount, weighs 7.2 g
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The 2M 78 is a moving magnet mono cartridge for 78 rpm shellac records. It has a spherical diamond stylus with a 65 µm tip radius, a larger profile than is used for microgroove records, and an aluminium cantilever. The body is made of polymer and aluminium.
The output is strapped, so both sets of pole pins carry the same signal. This gives true mono reproduction on any stereo playback system without mono-specific electronics. The recommended tracking force is 1.8 g, with a range of 1.6 to 2.0 g.
The cartridge uses the 2M Series half inch mounting and is sized to fit the most common turntables. A user guide and a dimensions chart are available for download. Other 2M Series variants cover premounted, bottom mount (Verso) and low-form factor (2MR) needs.
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Spesifikasjoner
- Merke
- Ortofon
- Modell
- 2M 78
- Kategori
- DJ-utstyr › Pickuper og nåler
Electrical
- Output voltage at 1 kHz, 5cm/sec
- 4 mV
- Frequency response 20 Hz - 20 kHz
- 3 / - 1 dB
- Internal impedance, DC resistance
- 700 Ohm
- Internal inductance
- 350 mH
- Recommended load resistance
- 47 kOhm
- Recommended load capacitance
- 150-300 pF
Stylus and Tracking
- Stylus type
- Spherical
- Stylus tip radius
- R 65 µm
- Cantilever material
- Aluminium
- Tracking ability at 315 Hz
- 70 µm
- Compliance, dynamic, lateral
- 18 µm/mN
- Tracking force range
- 1.6-2.0g (16-20 mN)
- Tracking force, recommended
- 1.8 g (18 mN)
- Tracking angle
- 20°
Physical
- Cartridge body material
- Polymer and aluminum
- Cartridge colour
- Black/Grey
- Cartridge weight
- 7.2 g
- Premounted cartridge weight
- 16.7 g
- Mounting types
- Half inch mount