JBL Application Engineered Series Application Manual

Contents

-7-For larger center clusters, consider the D or E series of arrays. For three- and four-clustersystems as described above (see Figure 3), the G series of arrays are particularly useful giventheir low profile and excellent polar characteristics. The stacked LF drivers of these arrayscombine to increase LF power and directivity, improving gain before feedback. They are alsovery simple to rig.Combination Speech & Music SystemsA majority of sound reinforcement projects fall into this category. Here, all the elementsassociated with a successful speech system (evenness of coverage, consistent patterncontrol, and good intelligibility) need to be combined with a system that goes lower infrequency and gets louder. These systems require a strong proscenium system toprovide source localization and solid low-frequency support.The preferred configuration of these systems is often an exploded arrangement, althoughother building constraints or preferences may dictate otherwise (see Figures 4 & 5).Clusters must provide good directivity to lower frequencies in order to provide evennessof coverage and improved system gain before feedback.Figure 3: Array G4 (p. 34) used as an explodedcluster in a fan-shaped room