JBL AC26 AE Series Array Guide - Page 9

High-Impact Music Systems While these systems are also sometimes used for speech, their primary purpose indicates that the arrays must produce high SPL Levels and have extended bandwidth by integrating subwoofers - whether flown or ground supported - into the system. Rectangular and auditorium shapes can have enhanced L/R only systems or exploded cluster systems - the center channel sometimes being optimized for speech. Fanshaped rooms once again must use three- or four-cluster systems to provide proper coverage and localization to the stage. Many of the Speech-only or Speech & Music scenarios described above may be used as a basis for a high-impact music system provided the SPL levels are high enough (>110dB in the seating area) and subwoofers are included in the system. Similarly, the array types described will generally be appropriate for this use if sized correctly for the room and properly augmented with subwoofers. Figure 6: Array 12 (p. 25) used in a Right-Left configuration in a small theater Gymnasium Systems Designing AE Series enclosures into a standard gymnasium facility is typically addressed by using horizontally oriented enclosures distributed along the width of the bleacher or seating areas. This approach will yield a better ratio of direct to reflected sound to the listeners ears than by using a center single cluster as the individual distributed enclosures will tend to cast much less energy onto far side wall surfaces than would be the case with a cluster aiming at a far seating area. The JBL MTU Series U-brackets can often be used to more easily attach the enclosures to the structural steel or beam locations. 9