Pioneer SX-550

Data

General

  • Manufacturer: Pioneer
  • Model: SX-550

Type: Receiver

  • Years of manufacture: 1976 - 1978
  • Manufactured in: partly Korea and Belgium
  • Color: front silver, wooden cabinet
  • Remote control: no
  • Power consumption: 185 W max.
  • Dimensions: 448 x 141 x 307 mm (WxHxD)
  • Weight: approx. 9.4 kg
  • Original price approx.: 275 $, 980 DM


Connections

  • Number of inputs:
    • Phono: 2.5 mV, 50 kOhm, max. 200 mV at 1 kHz.
    • Microphone: 7.5 mV, 50 kOhm

Aux: 150 mV, 50 kOhm

    • Tape Play 1, 2: 150 mV, 50 kOhm

Tape Play DIN: 150 mV, 50 kOhm

    • Antenna FM/MW: 75, 300 Ohm / 300 Ohm
  • Number of outputs:
    • Tape Rec 1, 2: 150 mV
    • Tape Rec DIN: 30 mV, 80 kOhm
    • Headphones (6.3mm jack):
    • 2 speaker pairs


Technical Data

Amplifier

  • Continuous power (at distortion):
    • 8 Ohm: 2 x 20 W

4 Ohm: 2 x 20 W

  • Dynamic power:
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: < 0.3%
  • Attenuation factor: 25 (at 8 Ohm)
  • Frequency response:
    • Phono: 30 - 15,000 Hz, ± 0.3 dB
    • High Level: 10 - 60,000 Hz (+0.5 dB, -1 dB)

Signal-to-noise ratio:

    • Phono: 70 dB
    • High Level: 90 dB
  • Tone control:
    • Bass at 100 Hz: + 9 dB, - 10 dB
    • Treble at 10 kHz: ± 8 dB
  • Loudness: yes, +6 dB at 100 Hz, +3 dB at 10 kHz


Tuner

  • Reception: FM/MW
  • Frequencies:
    • FM: 88 - 108 MHz
    • MW: 535 - 1605 KHz
  • Input sensitivity:
    • FM: 2.0µV
    • MW: 15µV
  • Frequency response: 30 - 15,000 Hz (+0.2 dB, - 2 dB)
  • Distortion factor:
    • FM, 1 kHz: < 0.15% (mono), < 0.3% (stereo).
  • Signal-to-noise ratio:
    • FM: 70 dB (mono), 65 dB (stereo)

MW: 50 dB

  • Channel separation: 30 dB (1kHz)
  • selectivity:
  • Co-wave selection: 1.0 dB
  • Spurious wave selection: 60 dB
  • Mirror frequency attenuation:
    • FM: 65 dB

MW: 40 dB IF attenuation:

    • FM: 90 dB
    • MW: 65 dB
  • AM suppression: 50 dB


Special Features

  • Microphone (6.3mm jack)


Remarks


Pictures

  • Image: Pioneer SX-550

Sx550.jpg


  • Picture: Pioneer SX-550

PioneerSX550.15.JPG


  • Picture: Pioneer SX-550

PioneerSX550.13.JPG


Reports

Links

  • External Link: "Hifi Archive" website: [1]
  • External link: "Pioneer Vintage" website: [2]
  • External link: "Classic Audio" website: [3]