• Year
  • 1965/1966
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 26074
    • alternative name: Grundig Portugal || Grundig USA / Lextronix

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Number of Transistors
  • Main principle
  • Superheterodyne (common); ZF/IF 460/10700 kHz; 2 AF stage(s); Reflex
  • Tuned circuits
  • 6 AM circuit(s)     10 FM circuit(s)
  • Wave bands
  • Broadcast, Short Wave plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 220 Volt
  • Loudspeaker
  • 3 Loudspeakers
  • Power out
  • 2.5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Musikgerät 2550 - Grundig Radio-Vertrieb, RVF,
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 550 x 310 x 220 mm / 21.7 x 12.2 x 8.7 inch
  • Notes
  • UKW/FM Bereich 87...108 MHz.
    Technische Daten wie 2500, jedoch andere Wellenbereiche sowie 5-kHz-Interferenzsperre.
    Die Konstruktion der Grundig 3-Röhren Empfänger begann 1955 mit dem Modell 80U, eine Vorstellung der Baureihe bis 1968 findet sich in diesem Gerätebericht.

    The design of this radio was the responsibility of RM member and frequent contributer Hans Knoll, in 1965.

  • Net weight (2.2 lb = 1 kg)
  • 6.3 kg / 13 lb 14 oz (13.877 lb)
  • Price in first year of sale
  • 250.00 DM
  • External source of data
  • erb
  • Literature/Schematics (1)
  • -- Original-techn. papers.

 Collections | Museums | Literature


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


Forum contributions about this model: Grundig Radio-: Musikgerät 2550

Threads: 1 | Posts: 2

Fellow Radiophiles,

I just concluded a translation from from German to English, of the Repair Helper with Alignment instructions that our Hans Knoll wrote in 1965, for the Grundig 2550 AM/FM/SW/Phono 3 tube radio that he also designed. I own a very fine specimen of this very fine performer.

The 2550 is the last of this extremelly sucessful series of 3 tube AM/FM radios that lasted for 10 years, starting in 1955.

Berhard Nagel has a very nice post about his restoration of the model 80, which was the first radio of this series.

Hans Knoll has contributed widely on this and many other topics, including a complete list of all models of this series of Grundig 3 tube AM-FM radios, many of which he designed..

This English translation of the Grundig 2550 Repair Helper with Aligment instructions includes additional explanatory notes and text that fill in details about German Radio alignment practice that was well known by German trained technicians in the 1960's, but is needed for today's radio collector. The German language original for this translation was dowloaded from the 2550 model page.

This translation includes contributions from the original author, Hans Knoll, who clarified many of the circumstances around each alignment instruction, and gave his approval for the final translation. Prof. Dietmar Rudolph, also contributed clarifications of concepts in the original instructions that did not translate well. Finally, Thomas Albrecht, substantially improved the first draft that I initially edited with Google-Translate.

Thank you gentlemen and fellow radiophiles, for your patient help and guidance.

Best Regards,


Joe Sousa, 01.Jul.10

Weitere Posts (2) zu diesem Thema.