Say you have been talking about 811 amps with neutralization?
Well I have an amplifier that has this in it?? I don't know why? But
I am looking for information or diagram of the Mars Linear amp
model SP-1000 SN119, works 80 - 10 meters. Uses four 811
tubes with filament neutralization.
It was made in Japan? The amp has been modified, the input goes
direct to the filaments, and the operation is grounded grid. Has the
filament chokes. (input does go through a coupling cap)
There is no load on the grid circuit? No tuned input or passive
resistor load? Nothing for the exciter to look at?
Any information would be helpful. Would like to restore this
amp and up grade to 572B tubes. Has a beautiful case and
about the size of a Henry table top amp.
It is called the MARS SP-1000, and never heard of it, some
say might have been made by Gonset? But built in Japan?
Thanks Ed K7DXV
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