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View Full Version : Operadio MP 718 amplifier - need a little help


September 12th 06, 11:00 PM
Hi guys,

I have an old prewar Seeburg jukebox missing the amplifier, and since
the original field coil speaker is also gone I plan to replace it with
stuff from the shelves.
I have an Operadio MP718 black wrinkle painted amp that would work
fine, but I could use a schematic for it. It is pretty straight
forward. The tubes are 5U4-6J7-6SN7-2x6L6 and it looks circa 1950. Is
this for a home radio/disc player?

It is powered by three wires with a relay inside. The speaker hook up
is the real challenge, there are lots of wires going to it via a 6-pin
plug.

I'd be glad to pay for a copy of a schematic. If anyone has an idea of
how to proceed, pls help.

thx, Jens