I received my new NSMT model 75 Loudspeakers three weeks ago. I did not notice a significant sonic change from out-of-the-box to 100 hours, where I am now. The manufacturer advised a 200 hour break-in; and not to play at high volume during the breakin. Also vary the listening volume. You got great advice from Legacy and your dealer. Enjoy!
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?