300-seat conference auditorium — speech-priority line array

Speech in a 300-seat room is a dispersion problem before a power problem. A point-source cabinet will reach the rear but light up the ceiling on the way (causing slap-back and reducing STI); an install line-array trades a slightly more involved rigging plan for the vertical control that keeps the speech wavefront pointed at heads, not at the ceiling plane.

This preset assumes a 25 × 14 m room (300 seats at the usual 1.2 m² per seat plus aisles), a 20 m listener distance to the back row, and 50 % power. The Vyper KV102 referenced is one of the architectural install columns; the same input shape works for d&b 24S, L-Acoustics A15 Focus, JBL Pro CBT series or QSC AcousticDesign — switch in the dropdown to compare SPL and box count.

Expect the planner to report SPL at the listener around the 85 dB target with comfortable headroom (the install line-array is over-spec for pure speech, but the dispersion control is what justifies it). The recommended quantity should land at 2 (left + right of stage) for this geometry; a single box would centre-image but the L/R is the convention for stereo program material as well as speech.

What this preset can't see: ceiling-reflection problems in a glass-and-concrete auditorium, the subwoofer requirement for program material above speech (the cabinet rolls off above 70–90 Hz depending on model), and the DSP / processor configuration that actually delivers the predicted dispersion at the listener.