Aurex Toshiba SR-510C

The Aurex Toshiba SR-510C is a mid-1970s flagship direct-drive turntable from Toshiba, prized for its advanced servo motor system, build quality, and versatile cartridge compatibility.

• Drive System: Direct-drive, AC servo motor with photoelectric servo speed control.

• Speeds: 33⅓ and 45rpm, with fine speed adjustment range of ±4% independently for each speed.

• Platter:
  Aluminum die-cast, 300 mm diameter
  Weight: 1.2kg
  High inertial mass (170 kg-cm²) for superior speed stability

• Wow and Flutter: 0.03% WRMS—very low, supporting extremely stable playback

• Signal-to-Noise Ratio: 60dB

• Tonearm:
  Static balance S-shaped aluminum arm
  Effective length: 237mm
  Overhang: 15mm
  Tracking error: +1.5°, -0.5°
  Needle pressure: adjustable 0–4g
  Equipped with oil-damped lift, anti-skate, and quick-set counterweight

• Cartridge:
  Typically supplied with C-404X electret condenser (MM compatible, CD-4 quad playback capable)
  Extended stylus tip, 25Hz–50kHz frequency response
  Output voltage: 30mV (1kHz, 50mm/s)
  Compliance: 15×10⁻⁶ cm/dyne
  Channel separation: 25dB (1kHz), 15dB (30kHz)
  Recommended load resistance: ≥30kΩ
  Recommended tracking force: 1.5g

• Chassis: Mahogany wood plinth with four adjustable shock-absorber feet and built-in spirit level for proper setup

• Dimensions: 550 x 190 x 414mm (W × H × D)

• Weight: 12–12.5kg

• Power: 100/110/120/220/240V 50/60Hz AC selectable; power consumption: 14W

• Features/Accessories:
  Dual shell stands for extra cartridges
  Precision strobe and speed monitoring with lamp indicators
  Oil-damped tonearm elevation
  Overhang gauge, 45rpm adaptor
  CD-4 quadraphonic disc compatibility (with appropriate cartridge/equalizer)
  Optional electret cartridge equalizer (Aurex SZ-1) for proprietary cartridge use