Newbee, that's probably as good a range as any. I doubt there's any "official" definition of the presence region, but it may extend a bit beyond 3,000 Hz. I've seem some old Yamaha receivers with specified presence controls of something like +/- 13 dB at 3,000. So at least those controls are CENTERED at 3K. I'm sure other receivers have slight variations.
-Bob
-Bob