• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Mystery Telefunken T9 amp

Hi to all,

I am new to the DIY site. I hope i can give you guys some useful info from what i know of this great audio hobby:D.
I'm musician and DIY audio technician since my teens (and that was in the 60ies).

Right now i'm busy trying to figure out what unit i am working on. As far as I can find on the web it is a unit from a Telefunken T9 master recorder.
I found it sitting on the attic, waiting for me to restore it..
I remember that the guy that gave it to me many years ago said it had to do with an old Philips EL3500 master recorder that i bought from him. It came together with a headblock and a loose erase head. It might be an erase / bias amp but I am not shure..:confused:
Look at a webpage i made that has some images and comments:

While you're at it, also look at some links to other tube and audio projects:

If anyone has a schematic for me I would be very happy.
I took a go at it to draw one myself but the original stuff is always better to have.
Pls. V67u


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