• Country
• Japan

• Manufacturer / Brand
• Pioneer Corporation; Tokyo

• Year
• 1970/1971

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 172408

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 32

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Wave bands
• Broadcast (BC) and FM or UHF.

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 117; 110/117/130/220/240 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 30 W (70 W max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Stereo Receiver SX-770 - Pioneer Corporation; Tokyo

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 430 x 145 x 349 mm / 16.9 x 5.7 x 13.7 inch

• Notes

• A hi-fi stereo receiver with an analogue dial housed in a wooden case with a 2 band AM/FM stereo tuner and integrated amplifier with continuous power output of 2 x 15 watts into 8 ohms or 2 x 17 watts into 4 ohms, total music power 70 watts into 4 ohms.

  Pioneer SX-770 Hi-Fi Stereo Receiver: Eingänge: Phono 1: 2,5 mV 50 kOhm, Phono Kristall: 58 mV 100 kOhm, Mikrophon: 5 mV 100 kOhm. 3 ICs: CA3054, LM703L (2x)

  Specification
  Audio Section
  Continuous Power Output (both channel driven)	17 + 17 watts into 4Ω 15 + 15 watts into 8Ω
  Music Power Output	70 watts total into 4Ω 52 watts total into 8Ω (IHF)
  Harmonic Distortion	< 0.8% (at 1kHz)
  Frequency Response	20Hz - 40kHz ±3dB
  Power Bandwidth	15Hz - 35kHz (AUX)
  Damping Factor	35 (8Ω) (at 1kHz)
  Inputs
  Sensitivity/Impedance
  MAGnetic PHONO CERamic PHONO MICrophone TAPE MONITOR AUXiliary	2.5mv/50kΩ (1kHz) 58mv/100kΩ 5mV/100kΩ (1kHz) 200mv/100kΩ (1kHz) 200mv/100kΩ (1kHz)
  Outputs	PHONO: RIAA
  Terminals and Jacks	Speakers: Impedance 4-16Ω Stereo headphones jack Simuitaneous tape Recording jacks  equipped with TAPE MONITOR switch Tape recording/playback jack (DIN)
  Equalization Curves	RIAA
  FM Section
  Frequency Range	87.5 - 108MHz
  IHF Usable Sensitivity	1.8µV
  Image Rejection	60dB (at 98MHz)
  S/N Ratio	70dB (IHF)
  Channel Separation	40dB (at 1kHz)
  Antenna Input	300Ω balanced
  AM Section
  Frequency Range	525 - 1605kHz
  IHF Usable Sensitivity	10µV
  Image Rejection	55dB (at 1000kHz)
  Antenna Input	Built-in Ferrite Loopstick Antenna

  Semiconductors:  3 ICs, 1 FET, 31 Transistors, 23 Diodes

  Versions/Power requirements
  USA  /  117V AC 60Hz
  General Export  /  110/117/130/220/240V AC 50/60Hz with voltage selector

  Power consumption:  108 watts (US), 118VA max. (others)

• Net weight (2.2 lb = 1 kg)
• 9.6 kg / 21 lb 2.3 oz (21.145 lb)

• Price in first year of sale
• 1,200.00 DM

• Mentioned in
• - - Manufacturers Literature (1970 & 1971 Pioneer Stereo Components catalogues)

• Literature/Schematics (1)
• - - Manufacturers Literature (Installation, Operating and Service manual Pioneer SX-770)

• Author
• Model page created by Eckhard Wegner. See "Data change" for further contributors.

• Other Models

• Here you find 1140 models, 1125 with images and 200 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Pioneer Corporation; Tokyo