Hitachi SR-504

Data

General

• Manufacturer: Hitachi
• Model: SR-504
• Type: Receiver
• Years of manufacture: 1979 - 1980
• Made in: Japan
• Color: Silver
• Remote control: no
• Power consumption: 150 W max.
• Dimensions: 435 x 144 x 350 mm (WxHxD)
• Weight: 7.4 kg
• Original price approx.: 600 DM

Connections

• Number of inputs:
  • Phono: 3 mV / 47 kOhm, 220 mV max.

Aux: 150 mV / 50 kOhm

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

Headphones

• • 2 pairs of loudspeakers

Technical Data

Amplifier

• Continuous power (DIN)

8 Ohm: 2x 27 W (RMS, 20 - 20'000 Hz)

• • 4 Ohm:
• Dynamic power
  • 8 Ohm:
  • 4 Ohm: 2x 40 W
• Total harmonic distortion: 0.08% (at nominal power)
• Attenuation factor: 20
• Frequency response: 10 - 30'000 Hz, ± 1,5 dB
• Signal-to-noise ratio: (extraneous voltage)
  • Phono: 70 dB
  • High level: 90 dB
• Tone control:
  • Bass: ± 10 dB at 100 Hz

Treble: ± 10 dB at 10 kHz

• Loudness: + 9 dB at 100 Hz, + 4 dB at 10 kHz
• High Filter:
• Low Filter (Subsonic): - 8 dB at 50 Hz, 12 dB / octave.
• Mute:

Tuner

• Reception: FM, MW
• Frequencies:
  • FM: 88 - 108 MHz

MW: 530 - 1'605 kHz

• Frequency response: 30 - 15'000 Hz, + 0,5 dB, - 1 dB
• Input sensitivity:
  • VHF: 1.5 µV

MW: 20 µV

• Distortion factor:
  • FM: 0.15% (mono), 0.3% (stereo)

MW: 0.2% Signal-to-noise ratio:

• • FM: 65 dB
  • MW: 50 dB
• Channel separation: 40 dB
• selectivity:
  • FM: 53 dB
  • MW: 40 dB
• Equal wave selection:
  • FM: 1 dB
• Spurious wave selection: 100 dB
• Mirror frequency attenuation:
  • FM: 85 dB

MW: 70 dB

• IF attenuation:
  • FM: 100 dB
  • MW: 90 dB
• AM suppression: 55 dB

Special Features

• FM muting

Remarks

• Other models in the same series:
• Hitachi SR-504
• Hitachi SR-604
• Hitachi SR-804
• Hitachi SR-904
• Hitachi SR-2004

Pictures

• Image: Hitachi SR-504

• Excerpt from brochure: Hitachi SR-504