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Using the Mid/Side mode

The DIGITAL MPA II is designed for stereo operation using the Mid/Side switch and two micro-

phones. One of the mics needs to have a figure-8 pickup pattern.

Start by aligning two mics 90 degrees apart. Connect the mic facing front (with an omni-directional or

cardiod pickup pattern) to CH1. Face the front of the figure-8 pickup mic to the left side and connect it

to the CH2 input (refer to figure 4). Depress the M/S switch and center both of the Output Gain con-

trols. Adjust the Input gain controls to such that both meters show the same level with a sound source

at least two feet in front of the forward mic.

The CH1 output is now the “Left” channel and the CH2 output is now the “Right” channel. Adjust the

Output gain controls as needed for your system level.

Figure 4 – Mid/Side Mic alignment

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