Concert Technology Flashcards
A pre amp is
A device used to provide amplification to the microphone so that the mixing board can manipulate the signal efficiently
A transducer is
A device used to transfer acoustic energy to electric energy and vice versa
A crossover is
A device used to split the signal by frequency
A dynamic processor is
A device used to regulate volume on a ratio principle after the initial gain stage
An equalizer is
A device used to adjust the volume of frequencies
A microphone is
An Input transducer
What type of input source are the most widely manufactured microphones, least expensive and most durable?
Dynamic
What type of input source are the most expensive and least durable?
Condenser
Hat type of input source uses electrostatic energy known as phantom power and are known for their accuracy and strength of high frequencies?
Condenser
What type of input source are fastened to a vibrating plate on the instrument?
Piezo-electric
What type of input sources takes a feed directly from an instrument into the pre amp?
Direct boxes (DI)
What is a filter used for?
To limit frequencies above or below fixed points
What is a compressor used for?
To control loud volumes
What is a gate used for?
To control soft volumes
What is a large vibrating element, known in slang as the woofer?
Direct radiator
What has the best control for direction of the sound of higher frequencies?
Bullet horn
What has the best control for direction of the sound of lower frequencies?
Horn folded into a W pattern
What is the ability of a component to spread out the sound to a certain angle, important towards eliminating feedback
Dispersion
Describe the process of ringing out a system
Set all graphic EQ sliders to fat
Bring up output gain until you hear feedback from a specific frequency
Find fader for specific frequency and bring it down until feedback is gone
Repeat for other frequencies
An example of this type of electrical current would be provided the power company
AC
An example of this type of electrical current would be from batteries
DC
What is the measurement of electron flow from one point to another, which is the amount of electrical flow possible through a wire?
Amps
What is the measurement expressing the amount of electrical energy consumed by a device?
Watts
What is the measurement of electrical pressure typically in the us at 110 volts
Colts
Describe three phase power and identify the wires used
It is an efficient way of distributing power, three alternating power sources the workload around a neutral wire. The red, blue, and black wire are the load wires. The grey wire is the neutral wire. The green wire is a safety feature and wired to the ground source
What power distribution method is sent to multiple sources (lights) and if one fails the others are not affected
Parallel
What power distribution method has one path if one fails every else with be affected
Series
Four way PA system seems to be sounding weird. What can you check?
Check if wires are plugged in correctly, nothing’s damaged, check high, low, and band pass filter. Check if there is a electrical/circuit issue, check amp
What restricts the amount of power to the individual light?
Dimmer
What is a light referred to in its nonspecified form
Lamp
What is the most common type of light used in a lighting system?
PAR can
What is a change of lighting scheme at a specific time?
Cue
What is a map showing all of the lighting instruments and electrical devices, their control assignment and locations?
Light plot
What are the primary colors of light?
Red, blue, green
3 Quad PA system
Mic, crossover, hpf 150 w amp,bpf 300 w amp ,lpf 500 w amp
Speakers
Lighting system
Position and unit number, circuit number, dimmer number,channel control
Light instrument, cable circuit, dimmer, light board
