Stage and Live Production

Tools in this group

• Truss Point Load and Span Capacity - UDL capacity from manufacturer curves; reactions, equivalent-UDL safety factor, pass/fail.
• Audio Speaker Time Alignment - Required delay-tower delay (ms) from speed-of-sound formula; Haas-window offset.
• DMX-512 Address and Universe Planner - Per-fixture channel ranges, universe utilization, conflict and overflow detection.
• Three-Phase Neutral Imbalance and Distro - Neutral current estimate, imbalance percent, harmonic-load warning.
• SPL and Inverse Square Law - L2 = L1 - 20 log10(d2/d1) with free-field / hemispherical / indoor mode adjustment.
• Rigging Capacity Quick Check - WLL at angle for shackles / slings / span sets / hoists with safety factor and pass/fail.
• SPL with Atmospheric Absorption (ANSI S1.26) - Far-field SPL with per-octave-band atmospheric absorption (alpha dB/m) per ANSI S1.26-2014 (R2019). Octave breakdown 125 Hz to 8 kHz; companion to the v1 spl-distance tile (inverse-square only).
• Power Distro Per-Leg Loading - Current per leg, percent of service rating, headroom, and a pass/fail against the 80% continuous limit for stage/event temporary power, 1-phase or 3-phase.
• Speaker Impedance Network - Series and parallel network impedance with an amplifier minimum-load safety check.
• Decibel Converter - Power, voltage, and reference-level decibel conversions plus incoherent source summation.
• Amplifier Power to SPL - SPL at the listener from sensitivity, power, and distance, with headroom and inverse power.
• Stage Lighting Beam and Throw - Theatrical fixture photometry: beam (pool) diameter at a throw distance (2 x throw x tan(beam angle / 2)) and center-beam illuminance by the inverse-square law (E = candela / distance^2, or candela estimated from lumens + beam angle), in footcandles and lux (first-principles point-source photometry, distinct from the architectural lumen-method average).
• LED Video Wall Build - Total resolution, physical size, cabinet count, weight, and average and peak power of an LED video wall from a cabinet's native pixel count and pitch and the layout, plus the minimum comfortable viewing distance.
• Projector Brightness and Throw - The projector lumens a screen needs from its size, gain, and target foot-lamberts, with the throw distance from the throw ratio. The projection analog of lighting-beam's fixture photometry.
• Room Acoustics: RT60 and Axial Modes - Reverberation time from the Sabine equation (0.049 x volume / total sabins) plus the three first axial room modes c/(2 x dimension) that predict bass buildup and nulls. The room half of the live-production acoustics math, alongside spl-distance and spl-atmospheric.
• Counterweight Fly System Balance - Required arbor counterweight, out-of-weight amount, and bricks to add or remove to balance a batten (required = (batten + load) x purchase_ratio). A double-purchase arbor needs twice the counterweight; an out-of-weight batten is the classic fly-rail hazard.
• LED Tape PSU and Voltage-Drop Run - Total load, recommended PSU size, and end-of-run voltage of a constant-voltage LED strip, with a too-long flag when the far end dims. Oversizing the PSU does not fix the drop -- power-inject or feed both ends; 24 V tape reaches roughly double a 12 V run.