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

• Other models in the same series:
• Amplifier:
• Pioneer SA-500 A
• Pioneer SA-6200
• Pioneer SA-7100
• Pioneer SA-8100
• Pioneer SA-9100

• [[Tuner:
• Pioneer TX-500 A
• Pioneer TX-6200
• Pioneer TX-7100
• Pioneer TX-8100
• Pioneer TX-9100

• [[Receiver:
• Pioneer SX-424
• Pioneer SX-525
• Pioneer SX-626
• Pioneer SX-727
• Pioneer SX-828
• Pioneer SX-2500

• Tape Decks:
• Pioneer CT-3131
• Pioneer CT-4141
• Pioneer CT-5151

• Coil Devices
• Pioneer RT-71
• Pioneer RT-1020

• Turntables:
• Pioneer PL-12 D
• Pioneer PL-15 D
• Pioneer PL-A 45
• Pioneer PL-51
• Pioneer PL-61
• Pioneer PL-C 1700

Pictures

• Image: Pioneer SX-424

• Excerpt from brochure: Pioneer SX-424