Fixed bias is the kind that has to be adjusted to suit the tubes. It applies a 'fixed' voltage (one that does not change) to the power tube Grid connections.

If you have only one speaker, and you disconnected the wires at the speaker end of the cable, it doesn't matter which way they go. There are only two terminals on the speaker, and only two wires, right? Polarity does not matter for a single speaker.

Things get 'interesting' with multiple speaker cabs, or if you messed with the wiring on the output transformer itself, but I don't think you did that.

Did you? :eek: