Ortofon 2M 78: Masterful Mono Playback for 78 RPM Records
Rediscover the warmth and richness of vintage shellac records with the Ortofon 2M 78 true mono cartridge. Engineered specifically for 78 rpm records, this cartridge employs a spherical diamond stylus that precisely navigates the wide grooves of your cherished collection. Constructed from Hopelex, the 2M 78’s body boasts high rigidity and minimizes unwanted vibrations, ensuring impeccable sonic fidelity. The cartridge’s innovative strapped output facilitates true mono playback on any stereo system, bypassing the need for specialized mono equipment.
Key Features
- Spherical Diamond Stylus: Designed for 78 rpm records, the 65 µm radius stylus ensures exceptional groove tracking and playback.
- Unmatched Sonic Accuracy: Experience enhanced audio clarity and detail with the cartridge’s advanced engine design.
- Universal Playback Compatibility: Achieve authentic mono sound on stereo systems without additional mono equipment.
- Effortless Installation: The 2M 78’s user-friendly design allows for straightforward mounting on a wide range of turntables.
Technical Specifications
| Specification | Detail |
|---|---|
| Output Voltage | 4 mV (at 1000 Hz, 5cm/sec) |
| Frequency Response | 20-20,000 Hz (+ 3 / – 1 dB) |
| Tracking Ability | 70 µm (at 315Hz) |
| Compliance | 18 µm/mN (dynamic, lateral) |
| Stylus Type | Spherical |
| Stylus Tip Radius | R 65 µm |
| Tracking Force Range | 1.6-2.0 g (16-20 mN) |
| Recommended Tracking Force | 1.8 g (18 mN) |
| Tracking Angle | 20° |
| Internal Impedance | 700 Ohm |
| Internal Inductance | 350 mH |
| Recommended Load Resistance | 47 kOhm |
| Recommended Load Capacitance | 150-300 pF |
| Cartridge Colour | Black/Grey |
| Cartridge Weight | 7.2 g (without screws) |
| Replacement Stylus Unit | 2M 78 (interchangeable with 2M Mono) |
| Stylus Lifetime | Up to 1000 hours (with proper care) |
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