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28 Cards in this Set

  • Front
  • Back
Name 4 benefits of using in ear monitors.
Low Stage Volume
Mobility
Less Setup Time
Cleaner Stage
A wireless system consists of..
Console
Multiband Limiter/Processor
Transmitter
Receiver
Ear Molds
How does an ambient mic help the musician's mix?
Crowd response, communication on stage, localization
5 ways we can improve gain before feedback.
Use as few mics as possible
Mic as close to the source
Speaker and mic directionality
Speakers close to listener
Maximize dist b/t mic and speaker
What is the difference b/t multimode and single mode fiber?
Single-Max bandwidth log dist.

Multi- Multiple pathways. short dist.
4 advantages of fiber over copper.
Low Attenuation
High Bandwidth
Immune to EMI and RFI
Difficult to tap
2 methods of splicing
Fusion
Mechanical
Why is a transformer required at each speaker in 70V?
To step down the voltage.
What 3 voltages are commonly used for constant voltage systems.
100(Europe)
70.7
25
2 components that make up a radio wave?
Electric Field
Magnetic Field
2 types of modulation.
Amplification

Frequency
2 types of audio processing that are used in transmitting and receiving.
Pre and Post EQ
Companding
What does "true diversity" mean?
Ability to sample the radio field from 2 or more locations, and select or combine the resulting signal.
Minimum antenna size?
1/4 wavelength
2 types of antenna distributaion.
Active and Passive
Methods to test a driver?
Battery
DMM
Sine Wave Sweep Station
3 benefits of ferrofluid?
Heat dissipation
Keeps coil centered in gap
Extra damping
3 types of material to make diphragms
Aluminum
Titanium
Beryllium
Why are we forced to deal with gain structure.
No standard peak level or noise floor.
How many volts does 0dBu equal?
.775V
Methods used to determine clip points?
On board lights
Oscilloscope
Piezo tweeter
DMM
Name the network topologies.
Ring
Star
Bus
What is cobranet technology?
Operates on a switched ethernet network or dedicated repeater network
How many channels of digital audio can cobranet support?
64 @ 24bit/48k
What does a conductor do?
Keeps time in the system
What point should front speakers overlap.
6dB down in the front row.
Important considerations with delay towers
Many are better than one
Dont crank them-make transparent
Maintain same axis as mains
Use stereo at own risk
Difference between directivity factor and directivity index?
Directivity factor - Q describes beamwidth

Directivity Index - SPL increase on axis compared to whole space