Maybe it’s none of my beeswax, but 200 hours seems like a stretch. That’s over six hours a day every day for a month. You might want to contact Gallo directly for a second opinion.
I would never tell a customer it will take that long for his new speakers to finally sound good. Improvement over time, yes. But not that much improvement.
I used to be a Gallo dealer. Never had the problems you’re having; all of my customers were very happy with their Gallo speaker right out of the box. (I became a speaker manufacturer, that's why I no longer sell the Gallos.)
Note that your legal right to return something for a refund also has a clock ticking. Unless you are confident the vendor will take the speakers back after 200 hours regardless, you might want to find out when that clock runs out. For items purchased "mail order", my understanding is that it’s 30 days.
Duke