Hi, I have just obtained an Armstrong 222 valve amp but unfortunately have no manual. I have ordered some two round pin speaker connection plugs (not 2 pin DIN) from the net.

My main queries is which in the positive and negative. Is the larger hole the positive? I assume that this is a constant regardless of the ohms and you turn the plug 180 degrees depending on the speakers.

In addition it came with a pair of home-mades with some Goodmans Axiom 10 drivers. I note that the drivers are connected directly to the 2 Pin Din female sockets. There is nothing in line just a insulated wire link. Is this correct/ safe? Should there not be some protection/ filter?

Many thanks in advance, Martin

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