@rms456 - I considered this and tried a quick test before using solid wire...
- Using pliers, I bent the wire 90 degrees
- I then bent the wire back on itself 180 degrees
- After several iterations (appox 15) the wire snapped
- This was the Neotec OCC wire
Considering a speaker cable will never undergo such extreme bending under normal use I figured it would probably be good for a lifetime.
Granted, vibrations can be fatiguing, but quality copper is able to withstand vibrations much better than household Romex.
Regards Steve