Pioneer SF-70

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Data

General

  • Manufacturer: Pioneer
  • Model: SF-70 (Japan version of the crossover Pioneer SF-700), see also link.

Type: Electronic crossover

  • Years of manufacture: 1969 - 1972
  • Made in: Japan
  • Colour: Silver, wooden side panels
  • Power consumption: 6 W
  • Dimensions: 300 x 115 x 254 mm (W x H x D)
  • Weight: 4.1 kg
  • Original price approx.: 33'000 Yen (Japan, 1969), 500DM


Connections

  • Number of inputs: 1

Line: 100kOhm, 1 kHz

  • Number of outputs: 4
    • Low: 3.5 V, 200 kOhm, 1 kHz
    • Mid: 3.5 V, 200 kOhm, 1 kHz
    • High: 3.5 V, 200 kOhm, 1 kHz

Center channel: 4 kOhm, 70 Hz


Technical Data

  • Distortion factor: 0.3%

Signal-to-noise ratio: > 85dB

  • Tone control adjustment options:
    • 3-channel operation:
      • LOW-MID crossover frequencies: 125 / 250 / 500 / 700Hz / 1 kHz
      • MID-HIGH crossover frequencies: 1k / 2k / 4k / 6k / 8Khz

2-channel operation:

      • LOW-HIGH crossover frequencies: 125 / 250 / 500 / 700Hz / 1 kHz / 2k / 4k / 6k / 8Khz
    • Edge steepness selectable:
      • Low: 6 or 12 or 18dB per octave
      • Low-Mid: 6 or 12 or 18dB per octave
      • Mid-High: 6 or 12 or 18dB per octave
      • High: 6 or 12 or 18dB per octave


Special Features

  • 2- or 3-channel operation by corresponding plug-in on the rear panel
  • Center channel output


Remarks

  • Other models in the same series:
    • Pioneer SC-700 preamplifier
    • Crossover Pioneer SF-700
    • Power amplifier Pioneer SM-700
    • Tuner Pioneer TX-500
    • Reverb amplifier Pioneer SR-202


Pictures

  • Image: Pioneer SF-700

Pioneer SF-700-1.jpg


  • Image: 700 series:
    • Preamplifier Pioneer SC-700

crossover Pioneer SF-700

    • Power amplifier Pioneer SM-700 (3x, bi-amping)
    • Reverb amplifier Pioneer SR-202

Pioneer SC-SF-SM-700-SR-202-1.jpg


  • Excerpt from brochure: Pioneer SC-SF-SM-700 with bi-amping illustration.

Pioneer SC-SF-SM-700-Prospekt-1.jpg


Reports

Links

  • External link to website "Audio Heritage, Japan": [[1]]