@dynguy - all cables require a "settling in" period even after simply being reconnected.- normally 20-30 hours
In your case, some break-in may be required but it should be shorter than what is required for new cables - maybe 50 hours
But that depends on the insualtion of the cables - some insulations do degrade and render the cable useless - but most modern cables use quality insulations so this is not normally a factor
- e.g. I had some old speaker cables with the clear insulation, which after 10 years, they were so bad I had ot toss them
- by comparison, Teflon is very good
Hope that helps - Steve