You know what a spotlight does. Spot fixtures have moving heads to create special effects such as light that spins or changes color.
A gobo (which stands for “goes before optics”) is a type of “stencil” made specifically for inserting into lighting fixtures. This allows for the projection of images such as patterns, textures and company logos, etc. in light.
These are very tightly-focused spot fixtures whose beams can look similar to a laser. They are often used with fog or haze to enhance the effect.
Dongles or Adapters
Laptops and other computers, monitors, audio equipment, etc. use a variety of port types and cables as connectors. Adapters ensure the equipment you’re using and the equipment brought to your event by speakers, entertainers, etc. can be properly connected. A dongle is a little device similar to a flash drive that plugs into a computer or other device, typically enabling software or the device itself to operate.
The frequency band (and more specifically, the radio band) is usually used in conjuction with communication devices and wireless microphones and receivers. Careful choice and assignment of frequencies will help eliminate interference from outside sources, especially in large cities.
In French, lavalier is a pendant necklace. Unlike stand mics and wireless hand-held mics, a lav mic is a wireless, hands-free device that can be suspended around the neck or clipped to a person’s clothing. A lav gives speakers/performers complete freedom of movement.
Mixer or Soundboard
Any time you have more than one sound source, your AV crew will need to monitor and adjust all those audio signals for proper balance. A mixer/soundboard enables them to do that from a single console.
This is what your AV crew uses to suspend lights, speakers, draperies, etc. from above. Rigging is constructed of trusses (crossbeams or scaffolding), to which equipment, cables, and small motors are attached. The motors allow crew members to raise and lower the rigging for easy access, or to move lights, etc. for effects during the event.
Rigging can be extremely heavy. Hotels and conference centers have reinforced rigging points built into ceilings to accommodate this, and they will give your AV team a rig plot (chart) that shows where they are located.
Transmitters (and Receivers)
From wireless mics and projectors to live streaming video, using transmitters and receivers to send and capture signals eliminates “cable spaghetti.” This looks tidier and more professional, and it’s safer around foot traffic.
Want to know about other terms? Just ask! It will help you decipher your AV quote and communicate clearly with your AV company, so you can work together to produce an event that is as smooth and spectacular as you envision.