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Old 23rd Oct 2010, 7:39 am   #1
6AL5W-Martin
Hexode
 
Join Date: Nov 2006
Location: Biedenkopf, [Hessen], Germany.
Posts: 424
Default Building a tube Ghetto Blaster

hello friends,
after a very long time of planing I have started to build a homebrew tube Radio in "ghetto blaster desgin".

My idea was, to have this very special case design.

The plan...

AM/FM stereo superhet with IF 455kHz AM and IF 10,7mc FM, including tube stereo decoder and "3D Sound".

3D sound, some old german radios use this, is simply to insert additional 2 speakers in the right and left side of the case,
the sound power amp use 3 transformers, one SE for left, one SE for right, and a center PP for front, all this with only 2 power tubes.
I will do it with 6AQ5 = EL90.

The special problem to build a ghetto blaster design is the very small space inside, the project will not go without exactly mechanical plan and design.

The Deepness of the case cannot be large, a question of design.
So I made the construction :

<--> 500mm
height: 200mm
deep: only 125mm ( 1" = 25.4mm)

The "buttons" have to look like cassette player buttons of a ghetto blaster..
The tuning scale, I decidet to make a hallicrafters design to it.
The magical eye tube, small and nice, EAM86
Upside a cover, containig the ferrite antenna, cooling, pots.
2 telescope antennas.
wood case for good tube sound. Black glossy painting.
aluminium parts for small weight.
a lot of fun and a lot of time !

Now, start
When I`m finished, I will give exactly plan of construction for a easy rebuild.

greetings
Martin
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Last edited by 6AL5W-Martin; 23rd Oct 2010 at 7:54 am.
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