贴图的这个SPU也在5000员左右,应该是预算之内的,参数如下:Ortofon SPU Classic N Technical Data
Output voltage at 1000 Hz, 5cm/sec: 200µV
Channel balance at 1kHz: < 1dB
Channel separation at 1kHz: > 25dB
Channel separation at 15kHz: > 10dB
Frequency range at -3dB: 20-25.000Hz
Frequency response FIM distortion at recommended: 20-20.000Hz ± 3dB
Tracking ability at 315Hz at recommended tracking force: 65µm
Compliance, dynamic, lateral: 8µm/mN
Stylus type: nude spherical
Stylus tip radius: 18µm
Tracking force range: 3.0-5.0g (30-50mN)
Tracking force, recommended: 4.0g (40mN)
Tracking angle: 20°
Internal impedance, DC resistance: 6 ohms
Recommended load impedance: > 10 ohms
Coil wire material: high-purity copper (OFC)
Cartridge color: black
Cartridge weight: 13g