>>With 10 hours/day, it should take 10-15 days at most<<
With many speakers I would tend to agree with you. In my experience it matters as much, if not more, with how loud the Zu speakers are driven as it does with the number of hours; although I would not make any critical evaluation of the speakers until you've reached a minimum of 200 hours.
I'm not sure that 10 hours/day for 15 days at high SPL is particularly conducive to matrimonial harmony.
With many speakers I would tend to agree with you. In my experience it matters as much, if not more, with how loud the Zu speakers are driven as it does with the number of hours; although I would not make any critical evaluation of the speakers until you've reached a minimum of 200 hours.
I'm not sure that 10 hours/day for 15 days at high SPL is particularly conducive to matrimonial harmony.