At the risk of being like the proverbial camera film: Overexposed and under-developed:
Connections, especially for the speaker line, can be an unsuspected twister. Long ago I once serviced our broadcasting corporation's monitor amplifiers (Leak TL12s!). I could not find the source of a slight distortion, until a wise old technician told me to undo the output terminals, scrape them and screw them back on. Gone was the distortion!
That guy has long since passed on, but the lesson remained to this day.
Connections, especially for the speaker line, can be an unsuspected twister. Long ago I once serviced our broadcasting corporation's monitor amplifiers (Leak TL12s!). I could not find the source of a slight distortion, until a wise old technician told me to undo the output terminals, scrape them and screw them back on. Gone was the distortion!
That guy has long since passed on, but the lesson remained to this day.
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