Nelson Pass from Operators Manual:
We prefer speaker cables that are short and stout. Oxygen-free copper and silver are the suggested materials. If you find any really exceptional cable made of gold, please gift us a couple hundred meters.
Fortunately this amplifier is not sensitive to the capacitive/inductive character of some of the specialty speaker cables, so feel free to experiment.
We have found that about 90 per cent of bad sounding cables are really bad sounding connections, and we recommend that attention be paid to cleanliness of electrical contact surfaces and proper connector fit.
Speaker cables should be firmly tightened down at the speaker output terminals, but not with a wrench. Output terminals will not withstand the levels of torque that may be easily applied by wrench. Hand tightening without excessive force is plenty. Cleaning contact surfaces with one of the commercially available electronic contact cleaners should be part of your annual system maintenance.
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