Lexicon MPX 550 manual Setting Audio Levels, Input, Output

Getting Started

Lexicon

SETTING AUDIO LEVELS

Note:

As with all audio products, it is good practice to first power on all outboard equipment, then the mixer, then the speakers.

INPUT

1.Load Program 1.

2.Set the Mix parameter to Dry (Edit Page 1, EDIT knob 4).

3.Using high-level program material, begin with a low input level and advance it slowly.

4.When audible distortion is reached or when the display clip indicators light and remain lit, lower the input level until the clip meters appear only on the highest peaks.

The Input Trim knob allows the unit to be driven by an input level within a range of +8 to +20dBu. The minimum setting (fully counterclockwise) should be optimal for +4dBu (balanced) inputs. The maximum setting (fully clockwise) should be optimal for -10dBV (unbalanced) inputs.

OUTPUT

1.Press the front panel System button to activate System Mode. Output Level, the first System Mode parameter, will be displayed.

2.Turn EDIT knob 3 to set the Output Level parameter. Unity gain for a +4dBu input device should be -12dB.

3.Press the System button again to deactivate System Mode.

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