Sony STR-7800 SD

Data

General

  • Manufacturer: Sony
  • Model: STR-7800 SD

Type: Receiver

  • Years of manufacture: 1977 - 1978
  • Manufactured in: Japan
  • Color: Silver, wood side panels
  • Remote control: no
  • Power consumption: 650 W max.
  • Dimensions: 490 x 170 x 515 mm (WxHxD)
  • Weight: 22.8 kg
  • Original price approx.: 700 US-$, 2'250 DM


Connections

  • Number of inputs:
    • Phono MM 1, 2: 2,5/5,0 mV / 50 kOhm
    • Tape Play 1, 2: 250 mV / 50 kOhm

AUX: 250 mV / 80 kOhm

    • Antenna FM (75/300 Ohm), AM.
  • Number of outputs:
    • 2x Tape Out (Cinch/DIN): 250 mV / 100 Ohm (Cinch); 30 mV / 80 kOhm (DIN).
    • FM Discri: 250 mV, 2.5 kOhm
    • Headphones (6.3 mm jack, front)
    • 3 pairs of loudspeakers


Technical Data

Amplifier

  • Continuous power
    • 8 Ohm: 2x 125 W (RMS, both channels, 20-20,000 Hz, 0.07 %)
    • 4 Ohm:
  • Dynamic power
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: 0.07% (at rated power)
  • Attenuation factor: 40 (8 Ohm)
  • Frequency response:
    • Phono: 20 - 40'000 Hz (+0/-0.2 dB).

High level: 10 - 30'000 Hz Signal-to-noise ratio:

    • Phono MM: 72 dB
    • AUX, Tape: 90 dB
  • Tone control:
    • Bass: ± 10 dB at 100 Hz

Treble: ± 10 dB at 10 kHz

  • Loudness: + 10 dB at 50 Hz, + 3 dB at 10 kHz
  • Acoustic Compensator:
    • Bass: + 9 dB at 50 Hz

Mids: + 3 dB at 1 kHz

  • High Filter 1: - 6 dB at 5 kHz
  • High Filter 2: - 6 dB at 10 kHz
  • Low Filter (Subsonic) 1: - 6 dB at 25 Hz
  • Low Filter 2: - 6 dB at 50 Hz
  • Mute: - 20 dB


Tuner

  • Reception: FM, MW
  • Frequencies:
    • FM: 87.5 - 108 MHz

MW: 525 - 1605 kHz

  • Frequency response: 30 - 15'000 Hz (+0.2 dB / -1.5 dB, FM)
  • Input sensitivity:
    • FM: 1.7 µV (IHF)
    • MW: 100 µV

Distortion factor:

    • FM: 0.2% (mono), 0.3% (stereo).
  • Signal-to-noise ratio:
    • FM: 73 dB (mono), 68 dB (stereo)

MW: 50 dB

  • Channel separation:
    • FM: 40 dB (at 1 kHz)
  • Selectivity: (IHF)

FM: 83 dB

    • MW: 35 dB
  • Equal wave selection:
    • FM: 1.0 dB
  • Spurious wave selection:
    • FM: 80 dB
  • Image frequency attenuation:
    • FM: 75 dB
    • MW: 40 dB

IF attenuation:

    • FM: 100 dB
    • MW: 35 dB
  • AM suppression: 54 dB


Special Features

  • Acoustic Compensator


Remarks


Pictures

  • Excerpt from US advertisement: Sony STR-7800 SD

Sony STR-7800-Prospekt-1.jpg


Reviews

Links