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28 Cards in this Set
- Front
- Back
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Name 4 benefits of using in ear monitors.
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Low Stage Volume
Mobility Less Setup Time Cleaner Stage |
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A wireless system consists of..
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Console
Multiband Limiter/Processor Transmitter Receiver Ear Molds |
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How does an ambient mic help the musician's mix?
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Crowd response, communication on stage, localization
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5 ways we can improve gain before feedback.
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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 |
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What is the difference b/t multimode and single mode fiber?
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Single-Max bandwidth log dist.
Multi- Multiple pathways. short dist. |
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4 advantages of fiber over copper.
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Low Attenuation
High Bandwidth Immune to EMI and RFI Difficult to tap |
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2 methods of splicing
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Fusion
Mechanical |
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Why is a transformer required at each speaker in 70V?
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To step down the voltage.
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What 3 voltages are commonly used for constant voltage systems.
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100(Europe)
70.7 25 |
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2 components that make up a radio wave?
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Electric Field
Magnetic Field |
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2 types of modulation.
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Amplification
Frequency |
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2 types of audio processing that are used in transmitting and receiving.
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Pre and Post EQ
Companding |
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What does "true diversity" mean?
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Ability to sample the radio field from 2 or more locations, and select or combine the resulting signal.
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Minimum antenna size?
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1/4 wavelength
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2 types of antenna distributaion.
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Active and Passive
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Methods to test a driver?
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Battery
DMM Sine Wave Sweep Station |
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3 benefits of ferrofluid?
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Heat dissipation
Keeps coil centered in gap Extra damping |
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3 types of material to make diphragms
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Aluminum
Titanium Beryllium |
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Why are we forced to deal with gain structure.
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No standard peak level or noise floor.
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How many volts does 0dBu equal?
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.775V
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Methods used to determine clip points?
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On board lights
Oscilloscope Piezo tweeter DMM |
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Name the network topologies.
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Ring
Star Bus |
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What is cobranet technology?
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Operates on a switched ethernet network or dedicated repeater network
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How many channels of digital audio can cobranet support?
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64 @ 24bit/48k
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What does a conductor do?
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Keeps time in the system
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What point should front speakers overlap.
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6dB down in the front row.
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Important considerations with delay towers
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Many are better than one
Dont crank them-make transparent Maintain same axis as mains Use stereo at own risk |
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Difference between directivity factor and directivity index?
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Directivity factor - Q describes beamwidth
Directivity Index - SPL increase on axis compared to whole space |
