RFSiesta
Well-known member
We found a broken DOA325 on our Lawo 975/4 stereo summing amplifier today, we wanted to experiment with another summing in our Trident 80, after the huge success it has been to implement 2 Telefunken V672.
These are tiny ceramic boards with transistors on it and all the resistors done with coal film on top of the ceramic plate. It's impossible to repair, if these resistors are precisely trimmed - and we didn't find schematics for them either.
I found from the 975 schem that it can be supplied with 325/1 OR 325/4 modules, so we have a chance in finding one 325/4 or two 325/1, to have the same on each channel.
If anyone has any idea how to get them - thanks in advance!
These are tiny ceramic boards with transistors on it and all the resistors done with coal film on top of the ceramic plate. It's impossible to repair, if these resistors are precisely trimmed - and we didn't find schematics for them either.
I found from the 975 schem that it can be supplied with 325/1 OR 325/4 modules, so we have a chance in finding one 325/4 or two 325/1, to have the same on each channel.
If anyone has any idea how to get them - thanks in advance!
