• Year
  • 1957/1958
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 21224

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 460 kHz
  • Tuned circuits
  • 8 AM circuit(s)     12 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave, Short Wave plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110, 125, 150, 220, 240 Volt
  • Loudspeaker
  • 4 Loudspeakers
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Concertino 8 - Telefunken Deutschland TFK,
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 630 x 380 x 285 mm / 24.8 x 15 x 11.2 inch
  • Notes
  • Bandbreite schaltbar; Kurzwellenlupe; baugleich mit AEG 6077WD
  • Net weight (2.2 lb = 1 kg)
  • 14 kg / 30 lb 13.4 oz (30.837 lb)
  • Price in first year of sale
  • 429.00 DM
  • External source of data
  • Erb

 Collections | Museums | Literature

 Forum

Forum contributions about this model: Telefunken: Concertino 8

Threads: 7 | Posts: 41

One of the issues of my Telefunkend Concertino 8 was a stuck volume potmeter: it could only be rotated with force.The potmeter is hidden quite deep. I succeeded in removing it by loosening four screws holding the entire potmeter assembly. You need to desolder the connections first. After taking out the potmeter, you can take it apart and free the shaft. Be careful not to damage the resistive element, it cannot be fixed, see the excellent article by Roberto. I added photo's for reference.

location 4 screws

location potmeter

potmeter disassembled

 

potmeter disassembled

 

 

 

 

Leon Abelmann, 27.Mar.21

Weitere Posts (1) zu diesem Thema.

Hello everyone:

I am hoping some of you German guys can help a poor American with a very nice German radio. I have many questions.  I am sorry if this is a little long.

My nephew has given me a Telefunken Concertino 8 radio that needs a lot of work.  I do not know how this magnificent radio came to be in the United States.  I have never seen a table size radio with 2 huge bass speakers and 2 tweeters.  I am very excited to see if it sounds as good as I think it will.

I have cleaned and repaired all of the pushbutton switches.  They all test good now. I have replaced all of the dial cord.  The radio still has all of the original Telefunken tubes.  One of them is a little weak, and the rest of them all test about half way between good and bad.

1: a question about the pushbutton switches.  They are labeled, from left to right AUS, TONBD-TA, LANG, BANDBREITE, MITTEL, KURZ, AND UKW.   Can someone translate the names for me and tell me what each button is for?  I think I understand "aus"="off" and "UKW"="FM"

The second row of buttons are labeled BASS, ORCHEST, JAZZ and SOLO.  I think these are preset tone controls.  My question about them is this:  One of them must always be down.  Therefore, how does this affect the "TIEFEN" ( "BASS" ?)  and "HOHEN" ("TREBLE" ?) controls?

2:  There are three wires on the EL84 output tube that have been cut off.  A blue wire on pin 4.  A yellow and green wire on pin five.  Since they are across the filament, I suspect they are for pilot lamps, but I do not have any pilot lamps that have no wires to them.  I am wondering if the "bass" and "treble" controls are supposed to have a light behind them.

I have printed a schematic I downloaded from radio Museum. The writing is very tiny and hard to read. I will do my best to guess what the numbers are for this next question.

3:  I have the radio plugged into a variable transformer.  As I bring up the voltage, the bridge rectifier labeled (I think) GR1 on the schematic (a large black object that looks like an electrolytic capacitor) gets a little warm.  There is a 1K ohm 2W resistor that I believe is labeled "W40" on the screen grid of the EL84 output tube that gets very hot.  I have only the large speakers connected.   Can anyone give me some advice about this?

I hope you guys can read my English. I would very much appreciate any help.

Best regards

Mike

 

Michael Boessen, 13.Feb.20

Weitere Posts (15) zu diesem Thema.

I was wondering if anyone can explain the purpose and function of the bandwidth switch. Presumably it is to increase or decrease the range of frequencies tuned in to at one time, but for practical purposes what should it do?  

Stuart Matousek, 10.Nov.10

Weitere Posts (3) zu diesem Thema.

I recently purchased this radio.  When it arrived I found that the Dial glass was broken -- the radio had been poorly packed.  I found another Concertino 8 and purchased it.  When it arrived, guess what, its Dial glass was broken too.  So now I have two Concertino 8's both with broken Dial glass.  I would be happy if I could make one good radio out of the two.  Please, if anyone should happen to have a scrapped Telefunken Concertion 8 that I could purchase the Dial glass, let me know.  I would be happy to purchase it plus shipping costs.  Thanks

 

James MacWilliams, 13.Nov.09

Weitere Posts (8) zu diesem Thema.

Good morning fellow radio enthusiasts!

I recently bougth a Telefunken Concertino 8 in Germany to replace another FM radio in my house that got broken and will take a very time-consuming repair.

First of all please let me express my admiration for the german radio industry of those times and the goals it achieved with outstanding products like the Concertino series. I am impressed by the overwhelming quality of this radio and by all the facilities with which it is equipped. The sound especially left me literally open-mouthed. The rotating ferrite antenna is another great feature.

Now to my question. It seems to me that the only "usable" setting for the equalization buttons is the "orchestra" setting. With "jazz" and "solo" my unit emphasises the high frequencies to such a point that the audio gets extremely fatiguating. Low frequencies are emphasised as well, but not as much as the high ones. In addition, the "treble" control, which is very effective when the radio is used in the "orchestra" setting, seems to have almost no effect when in "jazz" or "solo" mode. The bass control, instead, always effects the sound as it should.

I would like to read other owner's impressions on this topic. Is this expected? Perhaps those settings were designed to be used on AM broadcasts, where high frequencies are much less than in FM and thus need to be emphasised? Or does the equalizer of my unit definitely need to be checked?

Thank you.

Marco Gilardetti, 30.Oct.09

Weitere Posts (6) zu diesem Thema.

Hello I am beginning restoring a concertino 8 and have never worked on german radios before,only Australian ones. the sound is distorted and "blotchy" when connected to an external line in source suggesting problem is in audio amplifier.Does anyone know of a common cause for this before I go replacing all the capacitors in the audio amp section? From studying the circuit it appears that the triode bit of the EABC80 is part of the audio amp and the rest of that valve is for something completely different,is that correct? the voltages are about 20% low,is that enough to make a difference? They are high on switch on but drop with warm up and the rectifier gets warm suggesting there is some power dissipation in the rectifier,I thought of changing for new silicon rectifier diodes,is that a good idea?

If anyone can advise me it would be appreciated, I have some but limited knowledge of radio cicuits.

thanks

Stuart Matousek  

Stuart Matousek, 24.Apr.08

Weitere Posts (6) zu diesem Thema.

laut der AEG - Telefunken Vergleichsliste:

http://www.radiomuseum.org/dsp_forum_post.cfm?thread_id=4482

ist der Concertino 8 baugleich mit dem AEG 6077WD:

http://www.radiomuseum.org/dsp_modell.cfm?model_id=21101

Franz-Josef Haffner, 29.Oct.03

Weitere Posts (2) zu diesem Thema.