Ortofon SPU 85th Anniversary

The SPU 85th Anniversary

The SPU 85's unique characteristics included an outstanding housing made of Japanese Hida Beech wood, famous for its strength and hardness. For the exclusive surface treatment, the 6000 years old Japanese Urushi lacquer method was chosen in order to achieve a hard, resistant and beautiful multilayer surface in dark maroon colour.
In order to influence sound from the motor system, a new wire concept for the armature windings called “AUCURUM” was developed, that creates extraordinarily high conductivity and environmental resistivity. 

Features:
Cantilever: Aluminium
Stylus: Nude Elliptical
Armaturewire: AUCURUM, a composite of very pure copper and gold
Magnet: Neodymium
Housing: Hida Beech using Urushi lacquer technique

Technical data

• Output voltage at 1000 Hz, 5 cm/sec: 400 mV
• Channel balance at 1 kHz: < 1,5 dB
• Channel separation at 1 kHz: >23 dB
• Channel separation at 15 kHz: >18 dB
• Frequency range at -3 dB: 20-30,000 Hz
• Frequency response: 20-20,000 Hz +2/-1 dB
• Tracking ability at 315 Hz at recommended tracking force: 80 µm
• Compliance, dynamic, lateral: 8 µm/mN
• Stylus type: Nude elliptical
• Stylus tip radius: r/R 8/18 µm
• Tracking force range: 3.0-4.0 g (30-40 mN)
• Tracking force recommended: 3.5 g (35 mN)
• Tracking angle: 20°
• Internal impedance DC resistance: 3.5 Ohm
• Recommended load impedance: 50-100 Ohm
• Cartridge body material: Hida Beech wood + Urushi
• Cartridge colour: Dark maroon
• Cartridge weight: 30 g