My GLX Power Amplifier will not calibrate.
Your GLX firmware may require an update/patch that will allow you to use your Power Amplifier regardless of the unsuccessful calibration:
After installing the patch and updating your GLX firmware you may continue to receive a "Calibration Failed" message. To permanently stop receiving this message, you should contact Teacher Support to return the unit for modification. You may temporarily bypass the calibration sequence by pressing the F2 button on the GLX.
Creation Date: 01/21/2008