The gateway to the most admired and iconic of Ortofon 's pickup cartridge families, the SPU, was introduced to the market in 1958 in response to the demand for cartridges to play the new stereophonic vinyl records. The acronym SPU is the acronym for "Stereo Pick-Up" or "pick-up capsule", since until then (that is, during the 50s and 60s of the last century) the capsules on the market were called "capsules" dry. Also fundamental to the SPU is the relevance that Robert Gudmandsen, one of Ortofon 's most brilliant engineers, had in its development.
Based on 10-year-old technology and Ortofon 's experience in monophonic cartridge design, the SPU immediately set the quality standard for pickup cartridges for professional and audiophile applications, while also setting the path forward. in designing products in its class for the next 57 years. With these premises, the SPU Classic GM mkII, which mounts a Nude spherical profile diamond stylus, embodies the essence of Ortofon 's original moving coil designs, offering a perfect solution for reading old and contemporary stereophonic recordings with a dynamic sound. and powerful while being virtually free of intermodulation distortion and with splendid channel separation.
Characteristics:
- Very high performance moving coil (MC) capsule.
- Completely integrated into its dedicated capsule holder.
- Output voltage of 0.2 mV at 1 kHz and 5 cm/s.
- Frequency response: 20 - 25,000 Hz (cutoff points at -3 dB).
- Recommended Load Impedance: MC / >10 Ohm.
- Tracking Ability: 65 um (at 315 Hz).
- Dynamic Compliance: 8 um/mN.
- Recommended Support Force: 4 grams.
- For moderate and high mass reading arms with SME connection.
- Weight: 30g.
