AV System (Building)
The displays, sound, and control systems that make rooms work for presentations.
Quick Answer
A building AV (audio visual) system is the integrated set of displays, projectors, microphones, speakers, signal switching, control, and networking that supports presentations, meetings, and events. It spans conference rooms, classrooms, auditoriums, and venues, and is designed to meet performance needs for intelligibility, visibility, and ease of use.
The Full Picture
AV systems turn rooms into functional spaces for communication. Core elements include sources such as laptops and cameras, displays or projectors, microphones and speakers, a switching and processing core, and a control interface. Networked AV is increasingly common, sending audio and video over the same infrastructure as other building data.
Design starts with how the room will be used. Seating layout, sightlines, screen size, ambient light, and room acoustics all drive equipment choices. A room with poor acoustics or glare cannot be fixed by equipment alone, so AV designers coordinate closely with architects and acoustical consultants.
In construction, AV is typically delivered by a specialty integrator, but the base building must provide the supports: blocking in walls, conduit and cable paths, power, network connections, ceiling structure for projectors or speakers, and HVAC to keep equipment cool. Missing rough-in work is a common source of change orders.
Standards help set expectations. Industry bodies such as AVIXA publish guidance on topics like display sizing and audio performance, and project teams often reference them in specifications. Commissioning should verify performance in the finished room.
Real Examples
Common Misconceptions
People assume: AV can be added after the building is finished.
Actually: Backing, conduit, power, and structure for mounted equipment are far cheaper to install during construction, and retrofits often damage finishes.
People assume: Better equipment solves a poor room.
Actually: Room acoustics, lighting, and layout limit what any equipment can achieve, so the architectural design and AV design need to be coordinated.
Frequently Asked Questions
What does an AV system include?
Displays or projectors, audio equipment, signal routing and processing, control systems, cabling, and network infrastructure, plus any conferencing or recording equipment.
Who installs AV systems?
Specialty AV integrators, working from the design of an AV consultant, with the general contractor and electrical trades providing the supporting infrastructure.
What is AVIXA?
AVIXA is the professional association for the audiovisual industry. It publishes standards and recommended practices that project teams often reference.
How does AV relate to acoustics?
Speech intelligibility depends on reverberation and background noise, so the room's acoustic design directly affects how well an AV system performs.