Hitachi SR-903 specifications

Category : Receiver

Brand : Hitachi

General

Connections

Technical data

Amplifier

Tuner

Picture is from hadieho from Wolfsburg

• Manufacturer: Hitachi
• Model: SR-903
• Type: Receiver
• Years of construction: 1977 - 1978
• Manufactured in: Japan
• Color: Silver, Black
• Remote control: no
• Power consumption: 615 W
• Dimensions: 490 x 144 x 400 mm (WxHxD)
• Weight: 13.5 kg
• Factory price approx.: 1'298 DM

• Number of inputs:
  • Phono: 1.9 mV / 47 k643961b8da111c0a15d770a1109a86d4, 220 mV max.
  • Aux: 150 mV / 50 k643961b8da111c0a15d770a1109a86d4
  • Tape Play 1, 2: 150mV / 50 k643961b8da111c0a15d770a1109a86d4
  • Tape Play DIN 1, 2: 400 mV / 120 k643961b8da111c0a15d770a1109a86d4
  • Adapter: 150 mV / 50 k643961b8da111c0a15d770a1109a86d4
  • Antenna FM / MW: 75 643961b8da111c0a15d770a1109a86d4 / 300 643961b8da111c0a15d770a1109a86d4
< li>Number of outputs:
• Tape Rec 1, 2: 150 mV
• Tape Rec DIN 1, 2: 40 mV
• Headphones
• 2 pairs of speakers

• Phono: 1.9mV / 47 k643961b8da111c0a15d770a1109a86d4, 220 mV max.
• Aux: 150 mV / 50 K-ohms
• Tape Play 1, 2: 150 mV / 50 K-ohms
• Tape Play to DIN 1, 2: 400 mV / 120 k643961b8da111c0a15d770a1109a86d4
• Adapter: 150 mV / 50 K-ohms
• antenna FM / MW: 75 643961b8da111c0a15d770a1109a86d4s / 300 643961b8da111c0a15d770a1109a86d4s

• Tape Rec 1, 2: 150 mV
• Tape Rec DIN 1, 2: 40 mV
• headphones
• 2 pairs of Speakers

• continuous power output (DIN)
  • 8 643961b8da111c0a15d770a1109a86d4: 2x 75 W (RMS , 20 - 20, 000 Hz)
  • 4 643961b8da111c0a15d770a1109a86d4: 2x 110 W
• dynamic performance
  • 8 643961b8da111c0a15d770a1109a86d4: 2x 120 W
  • 4 643961b8da111c0a15d770a1109a86d4: 2x 160 W
• total harmonic distortion: 0.2 % (at nominal power)
• damping factor: 45
• frequency response: 10 - 30'000 Hz, ± 1 dB
• signal-to-noise ratio:
  • Phono: 70 dB
  • high level: 87 dB
• control:
  • Bass: ± 10 dB at 100 Hz
  • in the Middle: ± 6 dB at 1 kHz
  • treble sound: ± 10 dB at 10 kHz
• Loudness: + 9 dB at 100 Hz, + 4 dB at 10 kHz
• High Filter : - 8 dB at 10 kHz, 12 dB / octave
• Low Filter (Subsonic): - 8 dB at 50 Hz, 12 dB / octave
• Mute:

• 8 643961b8da111c0a15d770a1109a86d4: 2x 75 W (RMS , 20 - 20, 000 Hz)
• 4 643961b8da111c0a15d770a1109a86d4: 2x 110 W

• 8 643961b8da111c0a15d770a1109a86d4: 2x 120 W
• 4 643961b8da111c0a15d770a1109a86d4: 2x 160 W

• Phono: 70 dB
• high level: 87 dB

• Bass: ± 10 dB at 100 Hz
• in the Middle: ± 6 dB at 1 kHz
• treble: ± 10 dB at 10 kHz

• receiving: FM, MW
• frequencies:
  • FM: 88 - 108 MHz
  • MW: 530 - 1'605 kHz
• frequency response: 30 - 15 000 Hz, ± 1 dB
• input sensitivity:
  • FM: 1.5 µV
  • MW: 20 µV
• total harmonic distortion:
  • FM: 0,15% (Mono) to 0.25% (Stereo),
  • MW: 0,2%
• signal-to-noise ratio:
  • FM: 74 dB
  • MW: 68 dB
• channel separation: 45 dB
• selectivity:
  • FM: 80 dB
  • MW: 40 dB
• frequency selection:
  • FM: 1 dB
• in addition to the wave selection: 100 dB
• mirror frequency attenuation:
  • FM: 85 dB
  • MW: 70 dB
• ZF-loss:
  • FM: 100 dB
  • MW: 90 dB
• ON-suppression: 55 dB

• FM: 88 - 108 MHz
• MW: 530 - 1'605 kHz

• FM: 1.5 µV
• am: 20 µV

• FM: 0,15% (Mono) to 0.25% (Stereo)
• MW: 0,2%

• FM: 74 dB
• MW: 68 dB

• FM: 80 dB
• MW: 40 dB

• FM: 1 dB

• FM: 85 dB
• MW: 70 dB

• FM: 100 dB
• MW: 90 dB

• FM Muting

• Other models from the same series:
• Hitachi SR-503 L
• Hitachi SR-603
• Hitachi SR-703
• Hitachi SR-803
• Hitachi SR-903

• extract from the prospectus: Hitachi SR-503 L , SR-603, SR-703, SR-803, SR-903

• extract from the prospectus: Hitachi SR-903

Comment:

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