Sure. Check out table 5, page 9 of the MRL guide
http://home.comcast.net/~mrltapes/choo&u.pdf
If the tape is NAB 7.5 ips and you want NAB playback at 15 ips, you want table 5-7. If both were IEC, there would be no level adjustments, you'd just have to be aware that all the frequencies were...