JBL 2450J 2" High Frequency Compression Driver, 16 Ohm, 500Hz to 20kHz Frequency Range

The JBL 2450J is a professional quality, compact size and light weight large-format compression driver that incorporates a neodymium rare-earth magnet assembly designed by extensive computer modeling including finite element analysis. The magnet assembly provides the equivalent electromechanical conversion efficiency (B1 factor) at two-thirds the size and one-third the weight required by previous large-format compression driver designs.

The Coherent Wave phasing plug assembly consists of 4 die-cast annular aperture structures of constant path length to provide in-phase combining of diaphragm output at the driver's exit. This optimized configuration allows coherent summation of energy up to much higher frequencies than previous designs, with an attendant increase in perceived high-frequency clarity.

The diaphragm design includes JBL's exclusive three-dimensional diamond pattern surround which reduces membrane stresses in the diaphragm support structure and extends diaphragm life. The depth of the diamond pattern is closely controlled during the manufacturing process to provide predictable frequencies for the second and third normal resonance modes and for the basic suspension resonance mode.