[lcaillo]

The calibration file does not affect the position. If you want to compare to responses that others display, it may be more appropriate to use the same orientation, but the cal files were not made with regard to room effects. Generally it is suggested here to use a vertical orientation. I suggest trying both and see what differences you get in your setting.

Any time that you use calibration values from another's equipment, you are shooting craps to some degree. The point is no less valid with this mic. There are trends in any product, however, that may mitigate the problem. In this case, over the range of frequencies that most use for calibrating subs with REW, the variance is not as great. At frequency extremes, both high and low, they will be greater. Most folks are not building 10Hz subs nor calibrating at high frequencies. If you are, or if you are getting unexpected results, I strongly suggest getting your mic calibrated. Anytime you can reduce variables you will likely spend less time chasing your tail solving a problem.