Technics SA-6800X

Data

General

• Manufacturer: Technics (Technics By Panasonic)
• Model: SA-6800X

Type: Quadrophonic Receiver

• Years of manufacture: 1973 - 1976
• Made in: Japan
• Color: brushed aluminum front, wooden cabinet
• Remote control: yes
• Power consumption: 550 W max.
• Dimensions: 453 x 157 x 408 mm (WxHxD)
• Weight: 15.6 kg
• Original price approx.: 2'545 DM

Connections

• Number of inputs:
  • Phono 1: 3 mV, 50 kOhm, max. 330 mV
  • Aux 2-channel: 200 mV, 50 kOhm
  • Aux 4-channel: 200 mV, 50 kOhm
  • Tape Play 1, 2, 2-channel: 200 mV, 50 kOhm
  • Tape Play DIN, 2-channel: 200 mV, 50 kOhm
  • Tape Play 1, 2, 4-channel: 200 mV, 50 kOhm
  • Tape Play DIN, 4-channel: 200 mV, 50 kOhm
  • Discrete 4-channel: 200 mV, 50 kOhm
  • Main In:
  • Antenna (FM: 75, 300 Ohm, AM)
  • Microphone (6.3mm jack).
• Number of outputs:
  • Tape Rec 1, 2: 200 mV

Tape Rec DIN: 30 mV

• • Dolby NR Adapter:
  • Pre Out: 1 V
  • Headphones (6,3mm jack): 1x front, 1x rear
  • 2 speaker pairs front
  • 2 pairs of rear speakers

Technical Data

Amplifier

• Continuous power 4-channel (at distortion):
  • 8 Ohm: 4x 25 W (RMS, 20 Hz - 20 kHz, 0.5 %).
  • 4 Ohm: 4x 30 W
• Continuous power 2-channel (at distortion factor):
  • 8 Ohm:
  • 4 Ohm:
• Dynamic power:
  • 8 Ohm: 200 W
  • 4 Ohm: 300 W
• Total harmonic distortion: < 0.5 %
• Attenuation factor: 40 at 8 Ohm
• Frequency response: 20 - 50'000 Hz, - 3 dB
• Power bandwidth: 13 - 20'000 Hz, - 3 dB
• Signal-to-noise ratio:
  • Phono: 60 dB
  • High level: 80 dB
• Tone control:
  • Bass: + 13 dB, - 14 dB at 50 Hz.

Treble: ± 10 dB at 10 kHz

• Loudness: + 9.5 dB at 50 Hz, + 4 dB at 10 kHz
• Treble filter: - 6 dB at 6 kHz, 6 dB / octave
• Subsonic: - 6 dB at 200 Hz, 6 dB / octave
• Mute: yes, - 20 db
• AFD control (matrix)
  • WIDTH: Alpha = 0 - 1
  • DEPTH: Beta = 0 - 1
  • Phase behind channel, difference:
    • 90 degrees 90 degrees
    • 0 degrees 0 degrees
    • 180 degrees 180 degrees
  • AFD control (separate):
    • WIDTH: Gamma = 0 - 1
    • DEPTH: Gamma = 0 - 1

Tuner

• Reception: FM, MW
• Frequencies:
  • FM: 88 - 108 MHz
  • MW: 530 - 1,605 kHz
• Input sensitivity:
  • FM: 1.8µV
  • MW: 8µV
• Frequency response: 30 - 15,000 Hz (+0.3 dB, -1 dB)
• Distortion factor:
  • FM, 1 kHz: < 0.4% (mono), < 0.7% (stereo).
• Signal-to-noise ratio:
  • FM: 57 dB (mono), 52 dB (stereo)

MW: 55 dB

• Channel separation: 35 dB (1kHz)
• selectivity: 70 dB
• Co-wave selection: 1.5 dB
• Spurious wave selection:
  • FM: 80 dB

MW: 35 dB

• Image frequency attenuation:
  • FM: 85 dB
  • MW: 40 dB
• IF attenuation:
  • FM: 85 dB
  • MW: 35 dB
• AM suppression: 55 dB

Special Features

• Switch 4-channel AFD control system, discrete / stereo / mono
• Bass and treble control separately for front / rear
• Microphone mixer
• Acoustic field influencer:
  • Width, adjustable via sliders

Depth, adjustable via sliders

Remarks

• Other models in the same series:
• Technics SA-5200
• Technics SA-5400X
• Technics SA-5600X
• Technics SA-6000X
• Technics SA-6400X
• Technics SA-6700X
• Technics SA-6800X
• Technics SA-7300X
• Technics SA-8000X
• Technics SA-8100X
• Technics SA-8500X

Pictures

• Extract from brochure: Technics SA-6800 X