Eaw UX8800 User Manual download pdf (Page 27)

NOTES: The Amp Gain, Max Voltage, and Listener Distance can be adjusted at any time by

selecting the CH function and the desired Output Channel then editing these parameters.

The HPF and LPF filters can be adjusted at any time by selecting the X-over function and the

desired Input Channel then editing these parameters.

7.4.3 U-NET OUTPUT

Assign the summed, unprocessed sources to a U-Net output channel. This is useful for daisy-chaining an

analog or AES source signal to multiple UX8800 units.

7.4.4 NAME

Enter a name for the input channel, up to 16 alphanumeric characters.

7.5 CH (Output Channels 1 to 8)

Use the CH function to set the parameters for Output Channels 1 to 8 by selecting the 1 to 8 buttons.

7.5.1 SRC

Displays the Input Channel source for the selected output channel.

7.5.2 TYPE

Displays the model of the selected Greybox.

IMPORTANT !!

The Amp's Max Voltage and Amp Gain values you enter are CRITICAL in order for the

UX8800 to provide the correct acoustic balance and limiter parameters. These values

must match the actual performance of the amplifier connected to each Greybox's output.

If these values do not match the performance, the loudspeaker or array may be voiced

incorrectly, be over protected, or be under protected.

7.5.3 AMP GAIN

Scroll through and select the Amp Gain for the amplifier connected to that output channel. The range is

from 10 dB to 50 dB in 1 dB increments. This value is used by the UX8800 to determine the Output

Channel gain and limiter threshold setting.

The amplifier gain must be in dB, being 20 x log (input voltage / output voltage), the voltages being rms.

The value you enter MUST account for any gain or attenuation between the UX8800 output and the

amplifier input. Normally, the published gain specification for an amplifier is determined with its input

level control at maximum. Setting an amplifier's input level controls to less than maximum, as is often the

case to achieve good gain structure, changes the amplifier gain. In this case, the measure gain. Do not rely

on a level control's attenuation markings.

7.5.4 MAX VOLTAGE

Scroll through and select the Max Voltage (maximum rms voltage) for the amplifier connected to that

output channel. This value is used by the UX8800 to determine the limiter threshold setting.

The amplifier maximum voltage must be the rms level at clipping at the nominal impedance of the

loudspeaker, being the square root of (maximum watts at nominal Z x nominal Z). Determine this from the

amplifier specifications, calculation, or measurement.

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Eaw UX8800 User Manual Page 27