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user chooses this setting the software sets the XP-22’s gain to the unity gain setting,
regardless of how it was previously confi gured.
When at Unity both left and right level controls on the XP-22 will have a displayed
value of 89 (0 dB), and any previous balance settings will be set-aside into a
temporary registry. Both of these default conditions are intentional, and intended to
make the most advantageous use of your source electronics. You may also set any
input to unity (0 dB) by selecting low gain and setting the volume at step 89.
The electronic volume control allows greater than 90dB range and is driven by a
micro-controller that reads the optical encoder serving as a front panel volume
control. In this manner tracking of the volume of the two balanced channels is
possible with accuracy unavailable on any ordinary volume control, assuring precise
level steps and high common mode rejection in balanced circuits.
Wayne Colburn’s exceptional volume control in conjunction with the fl uorescent
display gives the user ability to replicate volume levels with absolute accuracy in steps
of roughly 1 dB.
Note: The way the volume control is designed, you may need to be at step 40 or 50
before you can hear anything.
Don’t be afraid to turn the volume up to 60, 70, 80 etc. The volume control is an
attenuator so the higher up you use it the more of the original signal is used.