Ortofon Spu #1 S and E

The SPU #1 S and SPU #1 E feature:  
-    Respectively Spherical and Elliptical stylus. The SPU #1 E elliptical stylus profile provides more detailed sound reproduction and expansive imaging.
-    High Purity Copper armature windings and terminal leads
-    Groundwood and resin composite housing
These SPU cartridges embody the essence of the original Moving Coils and are a perfect solution for the playback of both early and modern and contemporary stereo recordings.  Excellent price-to-performance ratio.

Specifications

Output voltage at 1000 Hz, 5cm/sec. - 0.18 mV
Channel balance at 1 kHz  -  1.5 dB
Channel separation at 1 kHz  -  20 dB
Channel separation at 15 kHz  -  10 dB
Frequency response - 20-20.000 Hz ± 3 dB
Tracking ability at 315Hz at recommended tracking force *)  - 60 µm
Compliance, dynamic, lateral - 10 µm/mN
Stylus type - Spherical / Elliptical
Stylus tip radius - R 18 µm  / r/R 8/18 μm
Tracking force range - 3.0-5.0 g (30-50 mN)
Tracking force, recommended - 4.0 g (40 mN)
Tracking angle - 20°
*) Typical value