Do speaker cables need a burn in period?

There is no such thing. Its all gigantic BS. AC Electricity flows through copper wires into the speakers which convert them into sound via speaker diaphragms. The copper only needs to be as thick as possible to minimize loss from electrical resistance and shielded enough to prevent outside distortion due to stray magnetic fields. There is no such crap as burn-in of copper wires.

Your garden won't give better fruits and vegetable if you send the same water them via copper pipes or cheap pvc pipes. Its a matter of longevity.

The only way something can truly experience a "burn-in" is if something physically changes. Think about that -- what is PHYSICALLY changing with the cable?  Ok, now you have your answer.

Very enjoyable to read these posts to my morning coffee. Thankyou all that contributes! By the way - I just moved really close to the nuclear power plant that feeds my equipment. Was that a difference!!

I find this to be an odd question for someone that has been a member here since 2006 and has 2 audio systems listed .   

 

Ideal brand / tension weight of fishing line?

I hear fluorocarbon brings out the mids, while monofilament has better bass response.

Lol.