JBL Professional VRX932LA-1 SPL & Coverage

The VRX932LA-1 is rated 130 dB maximum SPL at 1 m. Because SPL falls off with the inverse square of distance, that headroom drops to roughly 106 dB at 15 m when driven at full output, and to roughly 104 dB at 15 m at the 60% drive level set in this preset.

Its nominal dispersion of 100 deg horizontal by 15 deg vertical is what sets the approximate 17.9 m horizontal coverage radius at -6 dB in this scene. The narrow vertical pattern concentrates energy along the throw distance and keeps the beam off the ceiling and rear wall, reducing reflected energy back into the room. As a passive cabinet, the VRX932LA-1 needs a matched external amplifier channel sized to its power handling; it has no onboard amplification of its own.

Use the planner by dragging the listener distance and drive level sliders and watching the SPL readout move with them. The box-count suggestion is a front-coverage estimate for spreading pattern across the room width; whether the resulting SPL is actually adequate at the listener position is a separate check the planner reports alongside it, not the same question.

This planner does not model room reverberation or RT60, so it will not tell you whether a hard-surfaced auditorium adds unwanted reflected energy on top of the direct SPL shown. It does not zone SPL across separate seating areas, does not account for subwoofer pairing or crossover, does not model array mechanical rigging or splay angles, and does not include DSP delay or EQ tuning across an array.