Pioneer SX-850

Data

General

• Manufacturer: Pioneer
• Model: SX-850

Type: Receiver

• Years of manufacture: 1976 - 1978
• Made in: Japan
• Color: front silver, wooden cabinet
• Remote control: no
• Power consumption: 470 W max.
• Dimensions: 526.6 x 173 x 411.5 (WxHxD)
• Weight: 19.1 kg
• Original price approx.: 550 $, 2'198 DM

Connections

• Number of inputs:
  • Phono 1, 2: 2.5 mV, 50 kOhm, max. 200 mV at 1 kHz.
  • Microphone: 6.5 mV, 50 kOhm

Aux: 150 mV, 50 kOhm

• • Tape Play 1, 2: 150 mV, 50 kOhm

Tape Play DIN: 150 mV, 50 kOhm Dolby NR Adapter: 150 mV, 50 kOhm

• • Antenna FM/MW: 75, 300 Ohm / 300 Ohm
  • Main In: 1 V, 50 kOhm
• Number of outputs:
  • Tape Rec 1, 2: 150 mV
  • Tape Rec DIN: 30 mV, 80 kOhm

Dolby NR Adapter: 150 mV

• • Pre Out: 1 V, 1 kOhm
  • Headphones (6.3mm jack):
  • 2 speaker pairs

Technical Data

Amplifier

• Continuous power (at distortion):
  • 8 Ohm: 2x 65 W

4 Ohm: 2x 85 W

• Dynamic power:
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: < 0.1%
• Attenuation factor: 25 (at 8 Ohm)
• Frequency response:
  • Phono: 30 - 15,000 Hz, ± 0.2 dB.

High Level: 15 - 40,000 Hz (+0 dB, -1 dB)

• • Power Amplifier: 7 - 90,000 Hz

Signal-to-noise ratio:

• • Phono: 75 dB

High Level: 90 dB

• • Power amplifier: 100 dB
• Tone control:
  • Bass at 100 Hz:
    • Crossover frequency 200 Hz: ± 7 dB
    • Crossover frequency 400 Hz: ± 10 dB

Treble at 10 kHz:

• • • Transition frequency 2.5 kHz: ± 10 dB
    • Crossover frequency 5 kHz: ± 7 dB
• Loudness: yes, +6 dB at 100 Hz, +3 dB at 10 kHz
• Low Filter: yes, 6 dB / octave at 30 Hz
• High Filter: yes, 6 dB / octave at 8 kHz
• Mute: yes, -20 dB

Tuner

• Reception: UKW/MW
• Frequencies:
  • FM: 88 - 108 MHz
  • MW: 535 - 1605 KHz
• Input sensitivity:
  • FM: 1.8µV
  • MW: 15µV
• Frequency response: 30 - 15,000 Hz (+0.3 dB, -1 dB)
• Distortion factor:
  • FM, 1 kHz: < 0.15% (mono), < 0.3% (stereo).
• Signal-to-noise ratio:
  • FM: 72 dB (mono), 67 dB (stereo)

MW: 55 dB

• Channel separation: 50 dB (1kHz)
• selectivity: 80 dB
• Co-wave selection: 1.0 dB
• Spurious wave selection:
  • FM: 80 dB

MW: 35 dB

• Image frequency attenuation:
  • FM: 85 dB
  • MW: 65 dB
• IF attenuation:
  • FM: 100 dB
  • MW: 85 dB
• AM suppression: 55 dB

Special Features

• Pre- and power amplifier separable (Main In/Pre Out)
• Microphone (6.3mm jack)

Remarks

• Other models in the same series:
• Pioneer SX-450
• Pioneer SX-550
• Pioneer SX-650
• Pioneer SX-750
• Pioneer SX-850
• Pioneer SX-950
• Pioneer SX-1050
• Pioneer SX-1250

Pictures

• Image: Pioneer SX-850

Links

• External Link: "Hifi Archive" website: [1]

• External link: "Radio Museum" website: [2]

• External link: "Pioneer Vintage" website: [3]

• External link: "Classic Audio" website: [4]