The Ortofon SPU Classic N is a moving coil cartridge that offers a distinct sound reproduction experience. It is designed to provide high-quality playback with features that cater to both audiophiles and those looking for precise sound characteristics. The cartridge has channel balance at 1 kHz of 1 dB and an output voltage of 0.2 mV at 1 kHz, measured with a velocity of 5 cm/sec. The channel separation measures 20 dB at 1 kHz and 10 dB at 15 kHz, ensuring a clear division between the stereo channels. With a frequency response ranging from 20 Hz to 20 kHz with a tolerance of 3 dB, the SPU Classic N captures a wide range of audio frequencies accurately. Its tracking ability, at a frequency of 315 Hz and recommended tracking force, is 60 µm, reflecting its capability to handle intricate details in music playback. The dynamic compliance is rated at 8 µm/mN. The cartridge features a nude spherical stylus with a tip radius of R 18 µm, supporting a tracking force range from 3.0 to 5.0 g, with a recommended setting at 4.0 g. The tracking angle is designed at 20°, while the internal impedance is kept at 2.0 ohms, suited for various listening setups. The recommended load impedance stands at 10 ohms, and the copper coil wire used is of high purity, contributing to overall performance. The cartridge is offered in a black matte finish and weighs approximately 13 grams, making it a practical choice for a range of tonearms. In essence, the SPU Classic N captures the classic SPU sound while ensuring users benefit from dynamic tracking and impressive audio fidelity.
