Ortofon 2M 78 Moving Magnet Cartridge
The Ortofon 2M Mono SE, 2M Mono and 2M 78 are a true mono cartridges for playing mono vinyl records.
Features:
- 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.
The 2M series of cartridges features Ortofon’s 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 OM Super series.
Ortofon have optimized the design for ease of mounting the cartridge, and the weight and size to fit the most common turntables on the market today. The 2M Series provides excellent compatibility when used in an assortment of playback systems and with a wide variety of phono preamps.
Specifications
| Output Voltage at 1000 Hz, 5 cm/sec: | 4 mV |
| Channel Balance at 1 kHz: | - |
| Channel Separation at 1 kHz: | - |
| Channel Separation at 15 kHz: | - |
| Frequency Range at -3dB: | 20-20,000 Hz |
| Frequency Response: | 20-20,000 Hz +3 / -1 dB |
| Tracking Ability at 315 Hz at Recommended Force: | 70 µm |
| Compliance, Dynamic, Lateral: | 18 µm/mN |
| Stylus Type: | Spherical |
| Stylus Tip Radius: | R 65 µm |
| Tracking Force Range: | 1.6-2.0 g (16-20 mN) |
| Tracking Force, Recommended: | 1.8 g (18 mN) |
| Tracking Angle: | 20° |
| Internal Impedance, DC Resistance: | 700 Ohm |
| Internal Inductance: | 350 mH |
| Recommended Load Resistance: | 47 kOhm |
| Recommended Load Capacitance: | 150-300 pF |
| Cartridge Colour, Body/Stylus: | Black/Grey |
| Cartridge Weight Without Screws: | 7.2 g |
| 2M PnP MkII Cartridge with Integrated Headshell Weight: | 20 g |
| 2M PnP MkII Cartridge with Integrated Headshell Length: | 52 mm |
| Replacement Stylus Unit: | 2M 78 (Interchangeable with 2M Mono) |
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