Pioneer SX-1280

Data

General

• Manufacturer: Pioneer
• Model: SX-1280
• Type: Receiver
• Years of manufacture: 1978 - 1980
• Made in: Japan
• Color: front silver, wooden cabinet
• Remote control: no
• Power consumption: 1'000 W max.
• Dimensions: 556 x 186 x 461 mm (WxHxD)
• Weight: 28.7 kg
• Original price approx.: 950 US-$, 3'498 DM

Connections

• Number of inputs:
  • Phono 1, 2: 2.5 mV, 50 kOhm, max. 500 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 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):
  • 3 speaker pairs

Technical Data

Amplifier

• Continuous power (at distortion):
  • 8 Ohm: 2x 185 W
  • 4 Ohm:
• Dynamic power:
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion:
  • Rated power: < 0.05%
  • 90 W/channel: < 0.01%
• Attenuation factor: 30 (at 8 ohms)
• Frequency response:
  • Preamplifier (Phono): 20 - 20,000 Hz, ± 0.2 dB.
  • Preamplifier (AUX, Tape): 5 - 80,000 Hz (+0 dB, -1 dB)
  • Power amplifier: 5 - 100,000 Hz (+0 dB, -1 dB)

Signal-to-noise ratio:

• • Phono: 80 dB
  • AUX, Tape: 95 dB
• Stereo channel separation:
• Tone control:
  • Bass: yes
    • 50 Hz, ± 5 dB
    • 100 Hz ± 10 dB
  • Treble: yes
    • 10 kHz ± 10 dB
    • 20 kHz ± 5 dB
• Loudness: yes (+6 dB at 100 Hz, +3 dB at 10 kHz))
• High Filter: 8 kHz (12 dB/octave)
• Low Filter (Subsonic): 15 Hz (12 dB/octave)
• Mute: yes (-20 dB)
• Direct/Line-Straight: yes (Tone off)

Tuner

• Reception: FM/MW
• Frequencies:
  • FM: 88 - 108 MHz
  • MW: 535 - 1605 KHz
• Input sensitivity:
  • FM: 1.7µV
  • MW: 15µV
• Frequency response: 30 - 15,000 Hz (+0.2/-0.5 dB)
• Distortion factor:
  • FM (1 kHz): < 0.10% (mono), < 0.15% (stereo).
• Signal-to-noise ratio:
  • FM (65 dBf): 80 dB (mono), 71 dB (stereo).
  • MW: 55 dB
• Channel separation: 50 dB (1 kHz)
• selectivity:
• Co-wave selection: 1.0 dB
• Spurious wave selection:
  • FM: 80 dB
• Mirror frequency attenuation:
  • FM: 90 dB

MW: 40 dB IF attenuation:

• • FM: 110 dB
  • MW: 40 dB
• AM suppression: 55 dB

Special Features

• Pre- and power amplifier separable (Main In/Pre Out)

Remarks

• Other models in the same series:
• Pioneer SX-580
• Pioneer SX-680
• Pioneer SX-780
• Pioneer SX-880
• Pioneer SX-980
• Pioneer SX-1080
• Pioneer SX-1280
• Pioneer SX-1980

Pictures

• Image: Pioneer SX-1280

• Image: Pioneer SX-1280

Reports

• External link: Good Old Hifi website: [1]

Links

• External Link: "The Vintage Knob" website: [2]

• External Link: Pioneer Vintage website: [3]

• External Link: Classic Receivers website: [4]