2MR 78
Mono moving-magnet cartridge made for playing 78 rpm shellac records, with a spherical diamond stylus and a narrow body for low-profile tonearms such as Rega. Suited to listeners with 78 rpm collections who want true mono playback on a stereo system.
- Mono cartridge for 78 rpm shellac records
- Spherical diamond stylus, 65 µm tip radius
- Strapped output gives true mono on any stereo system
- Narrow low-form housing suits Rega-type tonearms
- Half inch mount, two-screw fitting, no spacers
- Replacement stylus: Stylus 2M 78
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The 2MR 78 is a mono cartridge built around the larger stylus profile that 78 rpm shellac records require. It carries a spherical diamond tip with a 65 µm radius on an aluminium cantilever, and is tuned for a tracking force of 1.6-2.0 g.
Its motor uses quad coils with split pole pins, and the output is strapped so both sets of pole pins deliver the same signal. This gives true mono reproduction through any stereo playback chain, without separate mono-specific equipment.
The housing is narrow and low in form factor, matching the requirements of turntables and tonearms such as Rega. It mounts with two screws on a half inch mount, with no modifications or spacers under the tonearm. A replacement stylus, the Stylus 2M 78, is available, and a user guide and dimensions chart can be downloaded.
Especificações
- Marca
- Ortofon
- Modelo
- 2MR 78
- Categoria
- Equipamento DJ › Cápsulas e agulhas
Audio
- Output voltage at 1 kHz, 5cm/sec
- 4 mV
- Frequency response 20 Hz - 20 kHz
- 3 / - 1 dB
- Tracking ability at 315 Hz
- 70 µm
- Compliance, dynamic, lateral
- 18 µm/mN
Stylus
- Stylus type
- Spherical diamond
- Stylus tip radius
- R 65 µm
- Cantilever material
- Aluminium
- Stylus colour
- Grey
- Replacement stylus
- Stylus 2M 78
Tracking
- Tracking force range
- 1.6-2.0g (16-20 mN)
- Tracking force, recommended
- 1.8 g (18 mN)
- Tracking angle
- 20°
Electrical
- Internal impedance, DC resistance
- 700 Ohm
- Internal inductance
- 350 mH
- Recommended load resistance
- 47 kOhm
- Recommended load capacitance
- 150-300 pF
Physical
- Cartridge colour
- Black/Grey
- Mounting type
- Half inch mount