System information

X-Array Touring Loudspeaker Systems – Applications Notes – Page 14
age shown in the table below, turn the controller-limiter threshold down so that the amplifier voltage is
reduced to that shown in the table below. If the amplifier is limiting at a voltage less than that indi-
cated in the table below, turn the controller-limiter threshold up by the number of dB indicated in the
table below.
X-Array™ Systems – Calibrate the Digital Limiter for These Amplifier Output Voltages:
HF: 74 volts rms or 2 dB below HF amplifier clipping (whichever is lower) at 5000 Hz. The limiter
should never be set for a higher voltage.
MB: 93 volts rms or to match MB amplifier clipping (whichever is lower) at 500 Hz. If the MB
amplifier has an internal limiter, the digital limiter may be set 1 dB above the amplifier limi-
ter.
LF: 93 volts rms or to match LF amplifier clipping (whichever is lower) at 50 Hz. If the LF ampli-
fier has an internal limiter, the digital limiter may be set 3 dB above the amplifier limiter.
SUB: 93 volts rms or to match LF amplifier clipping (whichever is lower) at 50 Hz. If the LF ampli-
fier has an internal limiter, the digital limiter may be set 3 dB above the amplifier limiter.
Xw12 Systems – Calibrate the Digital Limiter for These Amplifier Output Voltages:
HF: 74 volts rms or 2 dB below HF amplifier clipping (whichever is lower) at 5000 Hz. The limiter
should never be set for a higher voltage.
LF: 93 volts rms or to match LF amplifier clipping (whichever is lower) at 500 Hz. If the LF am-
plifier has an internal limiter, the digital limiter may be set 1 dB above the amplifier limiter.
Xw15 Systems – Calibrate the Digital Limiter for These Amplifier Output Voltages:
HF: 74 volts rms or 2 dB below HF amplifier clipping (whichever is lower) at 5000 Hz. The limiter
should never be set for a higher voltage.
LF: 93 volts rms or to match LF amplifier clipping (whichever is lower) at 500 Hz. If the LF am-
plifier has an internal limiter, the digital limiter may be set 2 dB above the amplifier limiter.
The limiter thresholds may be turned down lower for greater protection; however, caution should be ex-
ercised when adjusting the limiter thresholds up because of the risk of loudspeaker failure.
3. LOUDSPEAKER ARRAYS
3.1 Overview - Preliminary
NOTE: At the time of the release of this revision of these applications notes, the topic of X-Array™ loud-
speaker arrays was not completely written. As such, this section is preliminary and incomplete.
Electro-Voice has developed a library of loudspeaker arrays that achieve optimum performance of the X-
Array™ loudspeaker systems. These arrays have been developed and refined through the use of acous-
tic modeling, full-scale testing and hundreds of actual shows in real-life use. These arrays cover applica-
tions ranging from clubs, theatres, churches, outdoor stages and outdoor amphitheatres with audiences
of up to 20,000 people. This material is presented in a way that allows the array designer to identify po-
tentially useful arrays that will meet the acoustic requirements.
It should be recognized that array requirements and details vary with different venues and different appli-
cations. As such, there are a countless number of loudspeaker array configurations in which the X-
Array™ systems may be assembled beyond those discussed in these applications notes. Thus, the dis-
cussion and examples included herein are intended to introduce the reader to basic array concepts that
may be used to design X-Array™ loudspeaker arrays for any specific situation.
3.2 X-Array™ Array Applications Guide - Preliminary
The reader is directed to a spreadsheet entitled X-Array™ Array Applications Guide. The guide breaks
the arrays down into classifications then, under each classification there is a list of venue types (clubs,