Ortofon SPU 90th Anniversary

The SPU 90th Anniversary

The SPU 90th Anniversary, from 2008 was limited to 500 units. What makes the SPU 90th Anniversary unique is the combination of following four elements:  a completely new patent-pending magnetic system, the inclusion of the renowned Field Stabilizing Element system, the direct connection between the generator system and the wooden housing (ensuring extremely high internal damping), and finally the use of the Selective Laser Melting manufacturing technique.
SPU 90th Anniversary provides reproduction of sound that is unsurpassed in its neutrality, detail and dynamic range. 

Features:
Cantilever: Aluminium
Stylus: Nude Elliptical
Armaturewire: a composite of copper and silver
Magnet: Neodymium
Housing: Wood powder + Phenolic resin

Technical Data

• Output voltage at 1000 Hz 5 cm/sec.: 300 mV
• Channel balance at 1 kHz: < 1 dB
• Channel separation at 1 kHz: > 23 dB
• Channel separation at 15 kHz: > 15 dB
• Frequency range at -3 dB: 20-30,000 Hz
• Frequency response: 20-20,000 Hz ± 2 dB
• Tracking ability at 315Hz at recommended tracking force *): 80 µm
• Compliance, dynamic, lateral: 10 µm/mN
• Stylus type: Nude elliptical
• Stylus tip radius: r/R 8/18 µm
• Tracking force range: 2.5-3.5 g (25-35 mN)
• Tracking force, recommended: 3.0 g (30 mN)
• Tracking angle: 20°
• Internal impedance, DC resistance: 2 Ohm
• Recommended load impedance: 10-50 Ohm
• Cartridge body material: Wood powder + Phenolic resin
• Coilwire material: Silverplated Copper
• Cartridge colour: Shiny Black
• Cartridge weight: 30 g

*) Typical value