Description
The 2M 78 Series – the true MONO from Ortofon!
The 2M Series of cartridges is 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.
The name 2M was selected from several ideas. We wanted a modern name that would be easy to pronounce and remember, and therefore an alphanumerical name was chosen. 2M means MM, which is the abbreviation for moving magnet.
The 2M series of cartridges features Ortofons 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.
We have optimised 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.
The 2M 78 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.
2M Headshell features:
- Universal mount fitting a wide range of tonearms. NB: on Technics models please use the auxiliary weight which is vital in this case.
- The headshell body is manufactured from a special compound used for Medical industry, ensures high rigidity while reducing unwanted vibration
- Elegant hi-tech design
- Length 52mm. Headshell with a 2M cartridge pre-mounted provides correct Baerwald alignment with Ortofon TA-110/210, likewise with the major part of tonearms with universal mount
- Weight 16,9g, weight with a 2M cartridge pre-mounted 23g
- Exclusive plug-and-play solution
Technical data
| Technical data 2M 78 / 2M 78 Verso | |
| Output voltage at 1000 Hz, 5cm/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 315Hz at recommended tracking force | 70 µm |
| Compliance, dynamic, lateral | 18 µm/mN |
| Stylus type | Spherical |
| Stylus tip radius | R 65 µm |
| Tracking force range | 1,6-2,0g (16-20 mN) |
| Tracking force, recommended | 1,8 g (18 mN) |
| Tracking angle | 20° |
| Internal impedance, DC resistance | 700 Ohm |
| Internal inductance | 300 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 |
| Replacement stylus unit | 2M 78 |
| Stylus protection guard | 2M 78 |
| How to replace M2,0 mm screws on 2M 78 Verso | |
| Remove the stylus with the stylus protection guard from the cartridge body to avoid any damage to the diamondUsing Torx 8 key, unscrew the black screw from the Verso top plateRemove the top plate from the cartridge body by pulling the screws offRemove the two countersunk screws from the top plateInsert the two M2,0 mm screws in the top plateMount the top plate on the cartridge body. Hold the top plate with screw-threads hanging down and turn the cartridge body 180 degrees. Mount from aboveMount the black screw in the top plate and tighten with appropriate forceMount the cartridge on the tonearm using the enclosed toolMount the stylus with the stylus protection guard on the cartridge body |
Manufacturer site
- Ortofon
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