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Old mono records can be played with a stereo stylus, however it can cause problems. Mono records are cut differently from stereo records and for best results require a stylus specifically designed for mono replay. Stereo styluses can (depending on the record) sound a lot noisier and thinner than the same mono record played with a mono stylus This where the Ortofon OM D 25 M becomes useful. Its a slip on stylus which can be used on the same cartridge body as Ortofon's stereo styli for the OM series, but it is specifically designed for use with mono recordings. The result wil be less surface noise, improved dynamics and a fuller bodied sound than you might expect from a stereo stylus on a mono record. It is especially handy as it can be used on the same setup as your OM stereo stylus by simple virtue of swapping the stylus over and making a adjustment to the downforce. Specification | Output voltage at 1000 Hz,
5cm/sec. | 4 mV, Lateral (mono) | | Frequency range | 20-20.000 Hz | | Frequency response | 20-18.000 Hz +3 / - 2 dB | | FIM distortion at recommended
tracking force, DIN 45.542 | < 1 % | | Tracking ability at 315Hz at recommended tracking force | > 70 µm | | Compliance, dynamic, lateral | 7 µm / mN | | Stylus type | Spherical | | Stylus tip radius | R 25 µm | | Equivalent stylus tip mass | 0,5 mg | | Tracking force range | 2,0-3,0 g (20-30 mN) | | Tracking force, recommended | 2,5 g (25 mN) | | Tracking angle | 20° | | Internal impedance, DC resistance | 750 Ohm | | Internal inductance | 450 mH | | Recommended load resistance | 47 kOhm | | Recommended load capacitance | 200-600 pF | | Cartridge colour, body/stylus | Black | | Cartridge weight | 5 g |
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