Surround speakers supply so little sound to the overall experience that even if they require a couple hundred hours of break in, I doubt you will ever notice it. Over all over 85% of sound comes from the central channel I am sure 10% comes from the left and right. That leaves 5% for the surround. While the surrounds add enormously to the dimensionality, they’re being broken in is unlikely to be noticed.
Speaker Break-in
A search brings up lots of good, past discussion on this subject, so I have a good idea how to go about this. I have new speakers coming next, the manufacturer says this: "You shouldn't need a break in period the surrounds are already very compliant," In turn, the dealer says this: "Yes, just about every speaker needs break-in, less so than other models as they don’t feature internal amplification, but they’ll still benefit from a couple hundred hours of break in"
Speakers are Legacy Signature Se...Any thoughts?