Yamaha DME64N Owner's Manual page 429

Graph Control Points
The crossover level control points indicate [Output Level] and [Frequency]. The control points will
move in response to [Output Level] changes made via the knobs or edit boxes. The [Output Level]
and [Frequency] parameters can also be changed by directly dragging the control points.
Changes to the [Frequency] parameter are shown on the crossover phase response graph.
The control point in the center of the graph can be dragged vertically to change the [Output Level]
parameter.
Control points at the intersections between the frequency bands can be dragged horizontally to
change the [Frequency].
The [Output Level] parameter changes.
The crossover phase response will change.
Chapter 6 Component Guide
DME Designer Owner's Manual 429