Pioneer SX-424

Data

General

  • Manufacturer: Pioneer
  • Model: SX-424
  • Type: Receiver
  • Years of manufacture: 1972 - 1974
  • Made in: Japan
  • Color: front silver, wooden cabinet
  • Remote control: no
  • Power consumption: 90 W max.
  • Dimensions: 431 x 146 x 347 mm (WxHxD)
  • Weight: 7.5 kg
  • Original price approx.: 752 DM


Connections

  • Number of inputs:
    • Phono MM: 3 mV / 50 kOhm
    • Microphone (6.3mm jack): 6.5 mV / 50 kOhm
    • Aux: 180 mV, 100 kOhm
    • Tape Play: 180 mV / 100 kOhm

Tape Play (DIN): 180 mV / 100 kOhm

    • Antenna (FM: 75, 300 Ohm, MW: 300 Ohm).
  • Number of outputs:
    • Tape Rec: 180 mV

Tape (DIN): 36 mV

    • Headphones (6,3mm jack)
    • 2 pairs of loudspeakers


Technical Data

Amplifier

  • Continuous power (at distortion):
    • 8 Ohm: 2x 12 W

4 Ohm: 2x 13 W

  • Dynamic power:
    • 8 Ohm: 37 W
    • 4 Ohm: 50 W
  • Total harmonic distortion: < 1
  • Attenuation factor: 40 (8 Ohm, 1 kHz)
  • Frequency response:
    • Phono, RIAA: 20 - 20'000 Hz
    • High level: 20 - 70'000 Hz, ± 1 dB
  • Signal-to-noise ratio:
    • Phono, RIAA: 75 dB
    • High level: 85 dB
  • Tone control:
    • Bass: ± 9 dB at 100 Hz
    • Treble: + 6 dB, - 9 dB at 10 kHz
  • Loudness: + 9.5 dB at 100 Hz, + 5.5 dB at 10 kHz
  • Subsonic:
  • High Filter:
  • Mute:


Tuner

  • Reception: FM, MW
  • Frequencies:
    • FM: 88 - 108 MHz
    • MW: 525 - 1605 kHz
  • Input sensitivity:
    • FM: 2.3 µV

MW: 15µV

  • All other specifications for VHF
  • Frequency response: 20 - 15'000 Hz, + 0 dB, - 1 dB

Distortion factor:

    • FM: < 0.6% (mono), < 0.8% (stereo).
  • Signal-to-noise ratio:
    • FM: 65 dB

AM: > 50 dB

  • Channel separation: > 40 dB (1 kHz)
  • selectivity: > 45 dB
  • Common mode selection: 3.5 dB
  • Spurious attenuation: > 70 dB (98 MHz)
  • Image frequency attenuation:
    • FM: > 50 dB (98 MHz)

AM: > 45 dB (1000 kHz) IF attenuation:

    • FM: > 80 dB (90 MHz)
    • AM: > 35 dB
  • AM suppression: 45 dB


Special Features

  • microphone front 6,3mm jack


Remarks







Pictures

  • Image: Pioneer SX-424

Sx424.jpg


  • Excerpt from brochure: Pioneer SX-424

Pioneer SX-424-Prospekt-1.jpg


Reports

Links