Speakers sound too bright.

Brightness (lack of) is not usually what improves with speaker break in. What you normally hear in brand new speakers is a "tightness", the speakers don’t swing and let go of the notes. And the bass can seem somewhat lacking, the bass and midbass fill in when the driver suspension loosens up.

That said, a speaker can sound top heavy if the bass isn’t balanced with everything else. A tweeter will sound more prominent in a bass shy speaker. That could be what you are hearing and that just might change with more hours.

How long can you keep the speakers and still exercise the return option? If you have time, put a track on repeat while you are at work and let ’em rip for a few days. If they haven’t come around after ~200 hours, send ’em back.

@rwalsh07 "Pretty much bare wall, no room treatment, flooring is a mixture of carpet and laminate flooring." There's the vast majority of your problem . 

Until you address the room, there's nothing any tweek, speak, or electronics change can do that will help in any meaningful way.

@knighttodd +1! Good idea of yours to put some fabric in front of the tweeters. The OP can then experiment with adding layers until he is pleased with the sound.

I would return them and head to The Music Room ....

Well, because you like Schiit, add one of their equilizers.   The Loki Mini will work. Or, if you are adventurous, replace the resistor in the tweeter circuit with a higher value.