Alpine PXE-C80-88 Owners Manual - Page 24
Adjust the EQ Gain Offset, Adjust the Target Curve
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2 Adjust the EQ Gain Offset This setting will define the amount of boost and cut AutoEQ will use. When adjusting EQ Gain Offset, it is best to turn on the display of only the Measurement and EQ curves in the graph area. This way, you can clearly see the boost/cut areas. • Boosted areas are the frequency ranges where the EQ curve is above the Measurement curve. • Cut areas are the frequency ranges where the EQ curve is below the Measurement curve. Use the slider to raise or lower the EQ Gain Offset until there is an equal amount of boost and cut across the graph. Bad offset sample Figure 9, Figure 10. Figure 9 - The tuning screen showing an EQ Gain Offset with too much cut. The EQ curve is entirely below the Measurement curve. Figure 10 - The tuning screen showing an EQ Gain Offset with too much boost. The EQ curve is entirely above the Measurement curve. Good offset sample Figure 11. Figure 11 - The tuning screen showing an EQ Gain Offset that is good. It is balanced between cut and boost. 3 Play reference audio If you want to play reference audio while tuning, you can start now. You can play audio from a music player app on your PC, or you can send audio into the amp from a completely separate input. Both will work for real-time tuning. 4 Adjust the Target Curve Enable the display of the Target curve. (Displaying other curves is optional.) This is the yellow curve with control points which you can set to define your desired outcome. Each control point is represented as a node (white dot) on the curve. Moving the control points - To move a control point, simply drag it to the desired location. You can move it side to side or up and down. Adding a control point - To add a control point, double-tap on the Target curve where you want to create the new point. Then, drag that point to adjust its position. Deleting a control point - To delete a control point, double-top on it. You will have an option to delete that control point, or to cancel deletion. As you modify the target curve, AutoEQ will update the EQ curve and send it to the amp so you can hear your result. There is a delay of a few seconds from when you make an adjustment to when you hear it from the system. 5 Storing the EQ Curve When you are done adjusting your target curve, you can click the Store button to finalize the EQ curve on the amp. The EQ data is now saved on the amp. 22-EN