JBL Model 2130 is a high-power professional quality 12-inch transducer capable of generating extremely high sound pressure levels while at the same time providing clear, natural reproduc- tion of speech or music. It is ideally suited for columnar arrays or clusters, distributed-speaker ceiling installations, or as the low frequency transducer of compact two-way systems. In the last application, its full-range response provides a backup capability in the event of failure of the high frequency repro- ducer. Except for cone diameter, Model 2130 is identical in construction to 15-inch JBL Model 2135. Therefore, it can be substituted for the 2135 wherever available mounting space will not accommodate a 15-inch unit.