EAW UXA4406 series, Руководство по установке

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23
UXA Series Owners Manual
23
UXA Series Owners Manual
Output
Gain and Polarity
The gain page of the output channel allows users to increase or decrease the relative signal gain for the selected
output. The Gain value may be adjusted in 0.2dB steps from -40dB to +20dB. This page will also allow users to
change the polarity of the selected output from normal to reverse.
Delay
The delay page controls the amount of delay associated with the output channel selected and is adjustable from
0 to 998ms. The delay parameter is adjustable in fine steps at low values; the adjustment becomes progressively
coarser as the value increases.
High and Low pass Filters
High pass and low pass crossover filtering is provided for the output signal. Filter type is selectable from 1st
order, Butterworth, Bessel, Linkwitz-Riley, Hardman and LIR Linear Phase. Filter slopes of up to 8th order or 48dB /
octave are provided. Not all filter types are available in all slopes. For example 18dB / octave Linkwitz-Riley filters
cannot be selected because they do not exist.
The Hardman type filter is always described by its order as the filter becomes progressively steeper rather than
following a linear slope so a dB/octave description is not accurate.
Parametric Equalization
There are ten different EQ filters; two shelving filters and eight parametric filters. Parametric filters are defined
by frequency, bandwidth and gain. The frequency is controlled over the range from 10Hz to 25.6kHz. The
bandwidth, shown as Width on the screen, ranges from 0.10 octaves to 5.2 octaves. Bandwidth can be shown
and adjusted as Q or Octaves (Oct). Gain is adjustable in 0.2dB increments.
Limiter
Three parameters are available for adjustment:
Threshold
– the continuous RMS voltage which the driver should be able to withstand. This is calibrated at
the output of the amplifier. The Limiter can be defeated by setting the Threshold to the maximum
“Off” value.
Attack
– The time-constant of the speed at which the driver heats up (in seconds).
Release
– The time-constant of the speed at which the driver cools down expressed as a multiple
of the Attack time.
Please note that whilst the limiters in this product offer protection for amplifier and drivers, they can never
protect from all possible scenarios, therefore, EAW is not responsible for any damage which might occur.
Bridge
When an amplifier pair is set to Bridge Mode, it uses two amplifier channels to drive one loudspeaker with
greater power. In this mode, only one set of Output controls is active per pair of amplifier channels since both
of the amplifiers in the pair are driven with the same signals, as determined by the left-hand (lower numbered)
channel of the pair controls.