MM 4A-8U Stereo Ch = RC8A-U

Braun; Frankfurt

  • Jahr
  • 1958–1961
  • Kategorie
  • Rundfunkempfänger (Radio - oder Tuner nach WW2)
  • Radiomuseum.org ID
  • 155855

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 Technische Daten

  • Anzahl Röhren
  • 9
  • Hauptprinzip
  • Superhet allgemein; ZF/IF 460 kHz
  • Wellenbereiche
  • Langwelle, Mittelwelle, Kurzwelle und UKW.
  • Spezialitäten
  • Plattenwechsler
  • Betriebsart / Volt
  • Wechselstromspeisung / 110; 125; 150; 220; 240 Volt
  • Lautsprecher
  • 4 Lautsprecher
  • Material
  • Gerät mit Holzgehäuse

Die GFGF Zeitschrift Funkgeschichte bringt interessante Artikel zu Radios, Funkwesen und Medien. Bei Radiomuseum.org finden Sie die vollständigen Hefte früherer Ausgaben als PDF zum Download.

  • von Radiomuseum.org
  • Modell: MM 4A-8U Stereo Ch = RC8A-U - Braun; Frankfurt
  • Form
  • Standgerät: allgemein.
  • Abmessungen (BHT)
  • 44 x 29 x 15.5 inch / 1118 x 737 x 394 mm
  • Bemerkung
  • This Braun model MM 4A-8U Stereo 01 is a later export version of the "Musikschrank MM4" with 3 speakers (which has a radio chassis RC 62). Here there are 4 speakers - two for each channel and EL84 instead of EL95 etc. Oddly, the left channel woofer is larger than the right channel woofer. The MM4A-8U has a stereo phonograph by Telefunken/Voice of Music, Telefunken Model number TW 501 or later in the 500 series. Another photo, found online, confirmed that it was made by Voice of Music in America, then assembled and customized by Telefunken. The turntable is known to have been used starting in 1958. The tape input jack is also stereo. This, combined with the fact that it is a mono radio, would put it between 1958 and 1961. The tube lineup is shown on a label inside the back cover, and there is also a closer view of the chassis label in another photo: One reads RC 8-U, and the other reads RC 8A-U.
  • Nettogewicht
  • 41.2 kg / 90 lb 12 oz (90.749 lb)
  • Datenherkunft extern
  • Gerry Uhlan, Baltimore, USA (guest)
  • Autor
  • Modellseite von Ernst Erb angelegt. Siehe bei "Änderungsvorschlag" für weitere Mitarbeit.

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Forumsbeiträge zum Modell: Braun; Frankfurt: MM 4A-8U Stereo Ch = RC8A-U

Threads: 1 | Posts: 1

Hello,

I uploaded Braun Radio Chassis RC 8 schematic, alignment plan (that is also valid for older RC 7 Chassis) and speaker plans. Here´s a table of the "big" Braun Radio Chassis (RC) : 1955/56 : RC 60 (oddly also called RC 55 / RC 56)  --  1956/57 : RC 61  --  1957/58 : RC62  --  (mid) 1958 : RC 7 (all mono up to here) -- (late) 1958/59 : RC 8 stereo  --  1959/60 : RC 81 stereo  --  1960/61 : RC 82 stereo  --  1961-64 : RC 9 stereo. Only RC 9 can be upgraded by a stereo decoder for FM Stereo reception.

Unlike Grundig or Nordmende, Braun was a relatively small radio company, so we can strongly assume that these chassis have been built one after the other, not in parallel. The suffix (here: /8) is mentioned on the back covers as well as on the type labels, showing us the chassis version and the production period.

While the electronics are the same, speaker configuration differs from model to model. Concerning RC 8 stereo chassis, I uploaded the speaker configurations. Braun´s models with the RC 8 stereo chassis are: TS 3/8, G 11/8, PK-G 5/8, Atelier 1/8, MM 4/8, HM 5/8, HM 6/8, HM 7/8. At this time, the speaker boxes L 1 and L 2 were available, necessary for stereo effect for some of the models mentioned.

Regards, and Happy New Year !

Boris Witke

Boris Witke † 9.2024, 02.Jan.21

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