When you say "throw speed" you are probably talking about expo or exponential, find this on your 9xr and set to 70 for all except throttle. You will be required to set this for left rudder and right rudder as well as left and right aileron individually. When you have found the page and made the adjustment for say rudder, move the stick to both extremes whilst watching the screen, you will see what I mean.
Adding expo allows larger stick movements for smaller control surface movements, it all depends on how "touchy" you want the controls.
Being your first time I would set expo as mentioned, make sure that the control rods are mounted at the midpoints on the control horns and program in 70-80% throws (this is also known as "end point adjustment") on the expo page. Make no settings for expo or throws on the throttle, move the Tx trim for the throttle to its' lowest point.
Experiment with these settings on the ground and watch what the control surfaces do. Make as many trim requirements as you can mechanically, ergo adjust with the control rods. Leave any Tx trim until you are in the air, you may need every bit of Tx trim to save the AXN.
If you don't have anyone to help do a couple of glide throws into long grass, after all the AXN is a glider. This will give an indication of any unwanted movements that can be trimmed out before you do a power launch.
Watch this, if you haven't already done so
http://www.youtube.com/watch?v=8GnDRrOEM7QGood luck.