Technics SA-5770

Data

General

• Manufacturer: Technics
• Model: SA-5770 / SA-5770K
• Years of manufacture: 1977 - 1978
• Made in: Osaka, Japan
• Color: SA-5770 silver, SA-5770K black, both with wooden cabinet
• Remote control: no
• Power consumption: 430 W max.
• Dimensions: 590 x 180 x 493 mm (WxHxD)
• Weight: 26.5 kg
• Original price approx.: 800 US-$ (USA, 1977), corresponds to approx. 3'200 DM

Connections

• Number of inputs:
  • Phono 1: 2.5 mV / switchable 25 kOhm, 50 kOhm, 100 kOhm, max. 20 mV.
  • Phono 2: 2.5 mV / 50 kOhm, max. 20 mV
  • Aux 1, 2: 200 mV / 50 kOhm
  • Tape Play 1, 2: 150 mV / 47 kOhm
  • Tape Play 2 DIN: 180 mV / 47 kOhm
  • Main In: 1.5 V / 47 kOhm
  • Antenna FM/MW: 75/300 Ohm
• Number of outputs:
  • Tape Rec 1, 2: 200 mV

Tape Rec 2 DIN: 80 mV

• • Pre Out: 1,5 V / 100 Ohm, max. 3 V / 100 Ohm
  • Headphones (6.3mm jack)
  • 2 speaker pairs 4 - 16 Ohm

Technical Data

Amplifier

• continuous power
  • 8 Ohm: 2x 165 W (20 - 20'000 Hz, 0.08 %), 2x 175 W (1 kHz, 0.08 %)
  • 4 Ohm: 2x 205 W (20 - 20'000 Hz, 0,08 %), 2x 230 W (1 kHz, 0,08 %)
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: 0.08 %
• Attenuation factor: 60 at 8 Ohm
• Frequency response:
  • Phono: ± 0.2dB (RIAA)
  • High level: 20 - 20'000 Hz (+ 0 dB / - 0,3 dB)
• External voltage spacing: (at nominal power)
  • Phono: 78 dB
  • High level: 95 dB
• Tone control:
  • Bass: 50 Hz, ± 12 dB

Crossover frequencies: 250 Hz, 500 Hz

• • Mids: 1 kHz, ± 8 dB
    • Crossover frequencies: adjustable 250 Hz - 5 kHz
  • Treble: 10 kHz, ± 10 dB
    • Crossover frequencies: 2.5 kHz, 5 kHz
• Loudness: yes, 50 Hz + 10 dB
• High Filter: yes, 7 kHz, - 12 dB / octave
• Low Filter (Subsonic): yes, 30 Hz, - 12 dB / octave
• Muting: - 20 dB

Tuner

• Reception: UKW/MW
• Frequencies:
  • FM: 88 - 108 MHz
  • MW: 530 - 1605 KHz
• Input sensitivity:
  • FM: 1.8 µV
  • MW: 30 µV
• Frequency response: 20 - 18,000 Hz (+ 0.2 dB, - 0.8 dB)
• Distortion factor:
  • FM, 1 kHz: < 0.1% (mono), < 0.15% (stereo).
• Signal-to-noise ratio:
  • FM: 85 dB (mono), 75 dB (stereo)

MW: 55 dB

• Channel separation: 45 dB (1kHz)
• selectivity: 80 dB
• Co-wave selection: 1.0 dB
• Spurious wave selection:
  • FM: 80 dB

MW: 40 dB

• Image frequency attenuation:
  • FM: 85 dB
  • MW: 70 dB
• IF attenuation:
  • FM: 100 dB
  • MW: 70 dB
• AM suppression: 60 dB

Special Features

• Stereo / Mono switch
• Delay Time switch
• Program source display with LED
• Pre- / power stage separable

Comments

• Other models in the same series:
• Technics SA-5070
• Technics SA-5170
• Technics SA-5270
• Technics SA-5370
• Technics SA-5470
• Technics SA-5570
• Technics SA-5770

• [[Previous model: Technics SA-5760
• Technics SA-5760

• [[Successor model: Technics SA-1000
• Technics SA-1000

Pictures

• Image: Technics SA-5770

• Excerpt from brochure: Technics SA-5770 advertisement.

• Excerpt from brochure: Technics SA-5770 advertising.

Links

• External link to website "The Vintage Knob": [1]