L-Acoustics ARCS Operator's Manual

Contents

L-Acoustics ARCS Operator's Manual Manual pdf 22 page image

L-ACOUSTICS ARCS Manual V2.0 2/13/2003 21Whether this is required will also depend on how ''hot or cold'' the FOH mix engineer likes to run theconsole. When in doubt, disconnect all loudspeaker cables and run pink noise from the console atnominal level through the crossover to the power amplifiers and examine crossover input/outputlevels, crossover limiter indicators and amplifier clip indicators to verify system protection and gainstructure.3.4 ARCS PRESET LIBRARIESAll 2-way presets are configured in stereo 3-way mode, i.e., channel A and B Low/Highoutputs are on output channels 2 / 3 and 5 / 6, respectively. This means that drive racks donot require recabling when changing from 3-way to 2-way presets. In addition, for these 2-way presets, channels 1 and 4 are unlocked and available for programming of passive fillloudspeakers, subwoofers or, alternatively, for monitoring input system equalization whenusing the SMAART or SPECTRAFOO measurement systems.Note: for BSS 366, 3 x 2-way presets are provided in memory locations 37-46. This channelconfiguration is recommended for Left/Centre/Right (LCR) applications.Please refer to the appropriate Preset Description Sheet (excel .XLS files) to assist inselecting the appropriate preset and as a reference for configuring crossover output channelsfor your drive rack or signal distribution system.Complete Preset Description Sheet excel files are available for download from www.l-acoustics.com along with preset library data. As a quick reference, Figures 5-9 give channelassignments for XTA DP226, DP224, BSS 366, BSS 334 and BSS336, respectively.