Stereophonic Tuner twenty 20B

Marantz (Sound United LLC); Vista, CA

  • Year
  • 1970 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 268586

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

 Technical Specifications

  • Number of Tubes
  • 1
  • Number of Transistors
  • 40
  • Semiconductors
  • Main principle
  • Superhet with RF-stage; ZF/IF 10700 kHz
  • Tuned circuits
  • 19 FM circuit(s)
  • Wave bands
  • FM Broadcast Band Only
  • Power type and voltage
  • Alternating Current supply (AC) / 50 to 60 cycles, 120; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereophonic Tuner twenty 20B - Marantz Sound United LLC;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 390 x 146 x 365 mm / 15.4 x 5.7 x 14.4 inch
  • Notes
  • Oscilloscope indicator for tuning, field strength, multipath, internal or external audio.
    Front-End with dual-gate MOSFET RF-preamplifier, FET-mixer.
    30 bipolar transistors + 10 FET.

    Predecessor: Marantz Stereophonic Tuner twenty.

  • Net weight (2.2 lb = 1 kg)
  • 13 kg / 28 lb 10.1 oz (28.634 lb)
  • Price in first year of sale
  • 3,950.00 DM
  • Mentioned in
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • HiFi-Jahrbuch 6, Nr. 383, Verlag G. Braun, 1972
  • Literature/Schematics (2)
  • HiFi Stereophonie Test Jahrbuch 1972
  • Author
  • Model page created by Bernhard Nagel. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Stereophonic Tuner twenty is part of the collections of the following members.

 Forum