I couldn't help myself, so I looked up
measurements for the RTi A1 speakers. They aren't bad, but they do have a lift in upper treble at 9 kHz and above, and the treble does start to beam a bit around 8 kHz or so. So these probably sound bright on axis, but, looking at off-axis measurements, I bet that you get a pretty flattish direct response around 20 to 30 degrees off axis. Angling these speakers will have a real effect on upper treble, so be sure to experiment with toe-in for the most desirable sound if you haven't already done so.