Meyer Sound and L-Acoustics: how the choice actually gets made Two manufacturers, one decision, and the four things that settle it on a real job — coverage against the room, weight against the roof, where the amplifier lives, and what the rider says. None of which is which one sounds better. LED wall or projection: how the room settles it One measurement decides this and it is not the size of the projector. Why ambient light raises the black rather than dimming the picture, why a 20,000-lumen projector can land below the lowest published viewing category in a normally lit space, and the four questions that settle it. Micing an orchestra for a live-to-film performance Spot-mic distance and pattern, why the click track reaches the conductor and not every player, and how a pit with no room for a wedge gets monitored instead. Lighting a rock show: reading the rider, building the plot What a lighting rider itemizes, why doubling a beam angle can halve a truss’s fixture count, the circuit and DMX-bus arithmetic behind the plot, and what a support act actually gets against a headliner. IMAG at a corporate event: how it actually works Why a slide-sized wall is not sized for a face, two cameras doing two different jobs, and where the delay in a switched feed actually accumulates before anyone notices it. Reading an event production quote: why two numbers are not comparable Three quotes for the same event, nowhere near each other. Usually that is three documents describing three different jobs, and the difference is sitting in what each one assumes somebody else is bringing. Sizing an outdoor LED wall: weight, draw and how high it may go Once the site is walked, the question is narrower than LED or projection: can the ground, the power and the truck carry what was specified. Four numbers on the panel manufacturer’s own specification sheet answer it, and one of them is a ceiling on height. Mobile stage or modular stage: the numbers that decide an outdoor show A promoter asking for an outdoor stage is asking about trucks and hours. The two structures are rated differently and held to different standards, and the published figures settle it before anyone walks the field. Indoor or outdoor venue: the published figures that decide it Argued about weather, settled by documents. A performing arts centre prints its grid height, line sets and panel amperage; a city prints what it wants in hand and how long before the date. Why a field gets a second system, not a louder one Sound pressure falls about six decibels every time the distance doubles. What that does to a long room, how a delay position is timed, and why the answer moves by a few milliseconds across a hot afternoon. Your eye adapts. The camera does not. Color temperature decides more than color does, and the moment an event is streamed the lighting stops being an aesthetic decision and becomes an exposure requirement. An outdoor wall is a sail Daylight, wind load and ground support — the three problems that do not exist indoors and decide everything about a wall that does not have a roof over it. The permit is the schedule A public site belongs to everybody until hours before doors. What that does to a build, what a site plan has to show, and why nothing on a park site is provided. The room mix is the wrong mix to send A stream is a second show with its own audience and its own failure modes. Camera positions, redundancy, and the upload a venue can actually sustain for a whole program. A substitution call is a failure, not a negotiation What an advance is for, why a changeover is a scheduling problem before it is an equipment one, and what a backline tech is actually there to do. Eleven questions, and no calculator Two events with the same guest count can differ by a large multiple, and the reasons are physical. The questions a producer asks before quoting anything, in the order they get asked.