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PRELIMINARY
Operation and Setup, cont’d
Gain control
Individual channel input sensitivity control
Individual channel input gain control adjustments are made by rotating the encoder while pressing in the selected input button. The adjustment range is
NAdjusting input sensitivity for all inputs ensures that all inputs are at the same level, and at the highest level possible before clipping occurs.
NIndividual channel input gain levels either adds to or subtracts from the overall (global) power amplifier gain level per channel.
Front panel input sensitivity adjustment
NUpon initial power up of the switcher, the amplifier level is automatically adjusted to 50% (0 dB).
To make sure the right input sensitivity is attained, do the following:
1. Press and hold the selected input button for 3 seconds; the input’s LED blinks.
2. While still pressing the input button, rotate the level encoder until the clip LED blinks (see “Clipping indicator” section, on the next page), then rotate it back down until the blinking ceases.
NHaving the audio level beyond the point at which the clip LED flashes results in a distorted output signal (clipping).
3. When the minimum
| AUDIO | |
| AUX/MIX | LEVEL |
This LED lights solid | MIN/MAX | CLIP |
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when maximum volume |
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or level is attained. |
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Figure 3-6 — Front panel audio Min/Max LED and recessed encoders
N If the setting is left at the extreme minimum or maximum, the LED stays on, then extinguishes after approximately a quarter of a second.
Individual gain adjustment can also be made by
4. Repeat steps 1 through 3 for the other inputs as desired.
Amplifier level control
Amplifier level control is adjusted via the recessed power amplifier level encoder (potentiometer) marked “Level” on the front panel. The encoder has 20 detents (steps) per revolution, each step making a 1 dB change. The adjustment range is
NWhen the minimum
a 0.3 second interval. If the setting is left at the extreme minimum or maximum, the LED stays on, then extinguishes after approximately a quarter of a second.