• Year
  • 1973
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 156725

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

Audio (to hear)

 Technical Specifications

  • Number of Transistors
  • 45
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 100; 120; 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 55 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: STR-7055 - Sony Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 471 x 157 x 375 mm / 18.5 x 6.2 x 14.8 inch
  • Net weight (2.2 lb = 1 kg)
  • 15.3 kg / 33 lb 11.2 oz (33.7 lb)
  • Mentioned in
  • Funk-Technik (FT) (17/1973, S. 653 / Werbeanzeige, Neuvorstellung Messe Berlin)
  • Literature/Schematics (1)
  • - - Manufacturers Literature
  • Author
  • Model page created by Rolf Franke. See "Data change" for further contributors.

 Collections | Museums | Literature


The model is part of the collections of the following members.


Forum contributions about this model: Sony Corporation;: STR-7055

Threads: 1 | Posts: 1

The sophisticated STR-7055 consists of a sensitive tuner, versatile pre-amp and a powerful amplifier.

The i.f section has permanantly aligned solid state filters and a high gain limiter IC for excellent stereo separation. A new IC in the MPX section cuts down audible distortion in mono and stereo.

The a-m tuner employs tripple tuned solid state filters and new IC  with an AGC circuit to maintain high sensitivity, minimum distortion and superior signal-to-noice ratio.

The pre-amp section emloys low noise IC's. The power amplifier section is direct coupled. A paralled complimenary push-pull power amplifier reproduces the powerful output throughout the entire audio range without distortion.

Three speaker sets can be connected, controlled be a selector switch.

The rear panel provides the following: antenne and ground terminals; speaker terminals; AC input; a 5-pin DIN input/output; RCA inputs for phono, auxiliary, tape 1 and tape 2 and power amp; RCA outputs for tape 1 and tape 2 and pre-amp. There is also an a-m bar antenna.

There is much more information contained in the manual, as well as a block diagram.

I am using this set with the following connected: LP changer, cassette deck, 5 CD changer and two tape decks. I also subfeed a stereo console at another location in the house.




Rolf Franke, 07.Jul.09

Weitere Posts (1) zu diesem Thema.