Using Pan

L R

PAN

L R

BALANCE

The final Main output of the MPL 1640 is stereo—that is, there are two discrete Main Mix output jacks, labeled “left” and “right,” which will normally route signal (via a power amplifier) to two discrete speakers.* Because of this, you will usual- ly be working with a stereo field that ranges from hard left to hard right. The Pan control in each channel allows you to place each individual sound at any point within this left-right field, while keeping the overall level constant.

You can use stereo panning creatively in a variety of ways: For example, you might want to have guitars coming from one speaker and keyboards from anoth- er, or you might use panning to “spread” the signal from a piano miked with two microphones—one over the bass notes (panned left) and the other over the tre- ble notes (panned right). By turning a Pan knob while a signal is present, the sound appears to move in space (a process known as dynamic panning)—this can be particularly effective when applied to sound effects.

In live performance, you may want to resist the temptation to pan anything com- pletely hard left or right, since some members of the audience not seated in the center of the venue may miss some signal altogether. In these circumstances, you’re best to use modest panning, with signals routed no further than the 9 o’clock and 3 o’clock positions.

In the stereo Auxiliary return section, the Balance control allows you to adjust the relative levels of the signals arriving at the left and right inputs. In Aux returns where both inputs are connected, the left signal is automatically panned hard left and the right signal is automatically panned hard right. The Balance knob con- trols the relative levels of the paired input signals. When the knob is placed at its center (detented) position, both the left and right signals are at equal strength. When moved left of center, the left input signal remains the same but the right input signal is attenuated; when the knob is moved right of center, the right input signal remains the same but the left input signal is attenuated. When placed fully counterclockwise, only the left input is heard (panned hard left); when placed fully clockwise, only the right input is heard (panned hard right).

If you connect different monophonic devices (such as effects processors) to both the left and right inputs of an Aux return, you can use the Aux Balance control to blend the relative contribution of each. If you turn the Balance knob fully coun- terclockwise, you’ll hear only the device connected to the left Aux input; if you turn it fully clockwise, you’ll hear only the device connected to the right Aux input. For more information, see the “Using the Auxiliary Sends and Returns” section on page 20 of this manual.

*You can, of course, also use the MPL 1640 monophonically—simply route the same signal to both the left and right outputs.