Ortofon Stylus 10

Ortofon Stylus 10: A Replacement Stylus Built for OM-Series Cartridges

Ortofon Stylus 10 is a replacement stylus assembly designed to fit a defined list of Ortofon OM-based cartridge bodies rather than working as a universal, drop-in part. Buyers choose a dedicated stylus like this one because it restores the original tracking geometry and electrical behaviour of a specific cartridge body once the original diamond wears down, instead of approximating that behaviour with a generic replacement. Ortofon builds compliance, tip geometry, and tracking force ratings around each cartridge body, so fitting this stylus keeps the pairing within the tolerances that body was engineered for.

Which cartridges is the Ortofon Stylus 10 compatible with?

The Ortofon Stylus 10 is recommended for the Super OM 10, OM 10, OMP (p-mount) 10, OMB (Bulk) 10, OMT 10, LM 10, Concorde 10, Concorde EC 10, Concorde STD, TM 10H, LMB 12, SMB 12, and LMA 12 cartridge bodies. Anyone replacing a worn stylus on one of these models needs this exact stylus, not one from a neighbouring range, because the mounting geometry and internal magnet or coil arrangement of OM-based bodies is matched to a specific stylus family. Checking the cartridge body model against this list before ordering avoids a mismatch that would leave tracking force or tip alignment outside the cartridge's designed range.

What stylus profile does it use, and how does this affect tracking?

The Ortofon Stylus 10 is fitted with an elliptical diamond tip that has a radius of r/R 8/18 µm. An elliptical profile makes contact with a larger portion of the groove wall than a spherical tip does, which lets it follow high-frequency modulations more accurately and reduces tracing distortion on complex passages. The 8/18 µm figure describes the tip's minor and major radii, and it's this shape that lets the stylus sit closer to the groove's recorded waveform than a simple conical stylus would, without demanding the tighter alignment tolerances that a line-contact or Shibata profile requires.

What tracking force and angle does correct setup require?

The Ortofon Stylus 10 is rated for a tracking force range of 1.25 to 1.75 g (12.5 to 17.5 mN), with a recommended setting of 1.5 g (15 mN), and a tracking angle of 20 degrees. Setting the tonearm counterweight to the recommended 1.5 g gives the stylus enough downward force to stay seated in the groove without overloading the suspension, which matters because a dynamic lateral compliance of 20 µm/mN makes this a comparatively compliant stylus suited to lighter tonearms rather than heavy, high-mass designs. Anyone fitting this stylus should confirm their tonearm's effective mass sits within the range that a 20 µm/mN compliance and 1.5 g tracking force are designed for, since mismatched arm mass and stylus compliance is a common cause of tracking or resonance problems.

How does the Ortofon Stylus 10 perform across the audio frequency range?

The Ortofon Stylus 10 is specified with a frequency response of 20 Hz to 20 kHz within ±3 dB and a tracking ability of 60 µm at 315 Hz. The ±3 dB tolerance across the full audible range indicates how consistently the stylus converts groove modulation into an output signal at both frequency extremes, while the 60 µm figure at 315 Hz indicates the maximum groove velocity the stylus can follow at that standard measurement frequency without mistracking or distortion. Read alongside the recommended 1.5 g tracking force, this figure gives a practical sense of how the stylus handles high-level orchestral or percussive passages cut at higher groove velocities.

Where does this stylus sit within Ortofon's OM-series range?

The Stylus 10 is one of several individually numbered replacement styli in Ortofon's OM-series line, which also lists the Stylus 20 and Stylus 30 as separate stylus options, alongside the Stylus 78 for 78 rpm playback and a stylus guard accessory for OM Series and CC MKI bodies. Buyers should match the stylus number to their cartridge body using the compatibility list above rather than assuming any stylus in the range fits every OM-based cartridge, since compatibility is defined per model rather than by range position.