Author Topic: Blaupunkt Radio Gram  (Read 3734 times)

Offline Mars

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Blaupunkt Radio Gram
« on: August 15, 2012, 09:27:37 AM »
Hi All

On Monday I drove out to Durbanville to check a radio gram. It turned out to be a 1960's unit with quite a stylish design:



Inside is an Garrard turn table


Inside is the familiar hand wired circuit:


I can just imagine those german workers sitting and soldering these amps  ;D





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Offline mahleu

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Re: Blaupunkt Radio Gram
« Reply #1 on: August 15, 2012, 10:01:07 AM »
Blaupunkt things were manufactured under license in Jhb if I remember correctly. It probably says so on a sticker somewhere.

It's a pretty one, did you buy it? I had a look at a few yesterday.
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Offline Mars

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Re: Blaupunkt Radio Gram
« Reply #2 on: August 15, 2012, 10:55:39 AM »
No, I was called out to see if I could get some music out of the thing. They wanted to know if it was salvageable, otherwise it was going to be thrown out. Luckily for posterity (some grammar seems to be wrong here, but I cannot work out what  :Ooooooh:) our audio heritage with chug along for another generation or two :thumbs:

So they actually soldered the units together in Johannesburg? Amazing!

The interesting thing is that we used an ipod as a music source, and injected the signal at various points in the circuit, to check where the signal loss occurs. We got the best sound by connecting the ipod directly to the EL84 input grid. I was amazed at what level you can get out of a EL84 without using a driver tube. I now understand the "EL SPuddo" concept. I does seems to be a viable topology to try. Imagine: your sound source are fed directly into a power tube that drives an output transformer and you speaker. No caps in the signal path - only two components!
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Offline iondb

Re: Blaupunkt Radio Gram
« Reply #3 on: August 15, 2012, 12:53:43 PM »
Wow, a short audio path indeed!!

Offline Steerpike

Re: Blaupunkt Radio Gram
« Reply #4 on: August 15, 2012, 07:12:10 PM »
So they actually soldered the units together in Johannesburg? Amazing!

We used to have quite an impressive audio manufacturing industry in SA. Sony, Blaupunkt, Telefunken, Philips, Sharp, Sanyo and several others all had manufacturing plants here.  There were a few uniquely local brands too. I think the Tempest radiograms were also made here.

And every television set sold in SA in the 70s and 80s was made here.
« Last Edit: August 15, 2012, 07:15:21 PM by Steerpike »