Same amp, considering same speakers. How do you connect the resistor between the 8 ohm and common terminals? Are you saying on the back where the speaker terminals are, run an Audio Gold 12 watt? And in one sense it said between the 4 ohm and then it suggested the 8 ohm. Which of those worked and was this where it was attached?
For each channel, the resistor would preferably be connected between the 4 ohm and common terminals. I had suggested trying the resistor between the 8 ohm terminal and the common terminal only if connecting it between the 4 ohm terminal and the common terminal didn’t resolve the problem. Rob didn’t mention which pair of terminals he ended up using, but I suspect it was the 4 ohm and common terminals.
As I mentioned, using the 4 ohm terminal rather than the 8 ohm terminal is preferable, assuming it resolves the problem, because it would provide greater margin between the amount of power the resistor would be called upon to handle and the maximum amount of power it is rated to be able to handle. Although using the 8 ohm terminal should be ok in that respect as well.
And yes, you would connect the resistors to the binding posts on the rear of the amp, in addition to connecting the speaker cables to those terminals. Although the speaker cables needn’t necessarily be connected to the same terminal (4 or 8 ohm) as the resistor.
... run an Audio Gold 12 watt?
Yes, but be sure to also note the other characteristics I indicated for the resistors, especially the 47 ohm resistance.
Good luck. Regards,
-- Al